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Stojanović, Milan

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  • Stojanović, Milan (56)
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Measurement of properties of Bs0 → μ+μ− decays and search for B0 → μ+μ− with the CMS experiment

Sirunyan, A.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8970
AB  - Results are reported for the Bs0→ μ+μ− branching fraction and effective lifetime and from a search for the decay B0→ μ+μ−. The analysis uses a data sample of proton-proton collisions accumulated by the CMS experiment in 2011, 2012, and 2016, with center-of-mass energies (integrated luminosities) of 7 TeV (5 fb−1), 8 TeV (20 fb−1), and 13 TeV (36 fb−1). The branching fractions are determined by measuring event yields relative to B+→ J/ψK+ decays (with J/ψ → μ+μ−), which results in the reduction of many of the systematic uncertainties. The decay Bs0→ μ+μ− is observed with a significance of 5.6 standard deviations. The branching fraction is measured to be ℬ(Bs0→μ+μ−)=[2.9±0.7(exp)±0.2(frag)]×10−9, where the first uncertainty combines the experimental statistical and systematic contributions, and the second is due to the uncertainty in the ratio of the Bs0 and the B+ fragmentation functions. No significant excess is observed for the decay B0→ μ+μ−, and an upper limit of ℬ(B0 → μ+μ−) < 3.6 × 10−10 is obtained at 95% confidence level. The Bs0→ μ+μ− effective lifetime is measured to be τμ+μ−=1.70−0.44+0.61 ps. These results are consistent with standard model predictions.
T2  - Journal of High Energy Physics
T1  - Measurement of properties of Bs0 → μ+μ− decays and search for B0 → μ+μ− with the CMS experiment
VL  - 2020
IS  - 4
SP  - 188
DO  - 10.1007/JHEP04(2020)188
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8970",
abstract = "Results are reported for the Bs0→ μ+μ− branching fraction and effective lifetime and from a search for the decay B0→ μ+μ−. The analysis uses a data sample of proton-proton collisions accumulated by the CMS experiment in 2011, 2012, and 2016, with center-of-mass energies (integrated luminosities) of 7 TeV (5 fb−1), 8 TeV (20 fb−1), and 13 TeV (36 fb−1). The branching fractions are determined by measuring event yields relative to B+→ J/ψK+ decays (with J/ψ → μ+μ−), which results in the reduction of many of the systematic uncertainties. The decay Bs0→ μ+μ− is observed with a significance of 5.6 standard deviations. The branching fraction is measured to be ℬ(Bs0→μ+μ−)=[2.9±0.7(exp)±0.2(frag)]×10−9, where the first uncertainty combines the experimental statistical and systematic contributions, and the second is due to the uncertainty in the ratio of the Bs0 and the B+ fragmentation functions. No significant excess is observed for the decay B0→ μ+μ−, and an upper limit of ℬ(B0 → μ+μ−) < 3.6 × 10−10 is obtained at 95% confidence level. The Bs0→ μ+μ− effective lifetime is measured to be τμ+μ−=1.70−0.44+0.61 ps. These results are consistent with standard model predictions.",
journal = "Journal of High Energy Physics",
title = "Measurement of properties of Bs0 → μ+μ− decays and search for B0 → μ+μ− with the CMS experiment",
volume = "2020",
number = "4",
pages = "188",
doi = "10.1007/JHEP04(2020)188"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Measurement of properties of Bs0 → μ+μ− decays and search for B0 → μ+μ− with the CMS experiment.
Journal of High Energy Physics, 2020(4), 188. 
https://doi.org/10.1007/JHEP04(2020)188
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Measurement of properties of Bs0 → μ+μ− decays and search for B0 → μ+μ− with the CMS experiment. Journal of High Energy Physics. 2020;2020(4):188
4
2
4

Searches for physics beyond the standard model with the MT 2 variable in hadronic final states with and without disappearing tracks in proton–proton collisions at √s=13Te

Sirunyan, A.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8795
AB  - Two related searches for phenomena beyond the standard model (BSM) are performed using events with hadronic jets and significant transverse momentum imbalance. The results are based on a sample of proton–proton collisions at a center-of-mass energy of 13Te, collected by the CMS experiment at the LHC in 2016–2018 and corresponding to an integrated luminosity of 137fb-1. The first search is inclusive, based on signal regions defined by the hadronic energy in the event, the jet multiplicity, the number of jets identified as originating from bottom quarks, and the value of the kinematic variable MT 2 for events with at least two jets. For events with exactly one jet, the transverse momentum of the jet is used instead. The second search looks in addition for disappearing tracks produced by BSM long-lived charged particles that decay within the volume of the tracking detector. No excess event yield is observed above the predicted standard model background. This is used to constrain a range of BSM models that predict the following: the pair production of gluinos and squarks in the context of supersymmetry models conserving R-parity, with or without intermediate long-lived charginos produced in the decay chain; the resonant production of a colored scalar state decaying to a massive Dirac fermion and a quark; or the pair production of scalar and vector leptoquarks each decaying to a neutrino and a top, bottom, or light-flavor quark. In most of the cases, the results obtained are the most stringent constraints to date.
T2  - European Physical Journal C
T1  - Searches for physics beyond the standard model with the MT 2 variable in hadronic final states with and without disappearing tracks in proton–proton collisions at √s=13Te
VL  - 80
IS  - 1
SP  - Article 3
DO  - 10.1140/epjc/s10052-019-7493-x
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8795",
abstract = "Two related searches for phenomena beyond the standard model (BSM) are performed using events with hadronic jets and significant transverse momentum imbalance. The results are based on a sample of proton–proton collisions at a center-of-mass energy of 13Te, collected by the CMS experiment at the LHC in 2016–2018 and corresponding to an integrated luminosity of 137fb-1. The first search is inclusive, based on signal regions defined by the hadronic energy in the event, the jet multiplicity, the number of jets identified as originating from bottom quarks, and the value of the kinematic variable MT 2 for events with at least two jets. For events with exactly one jet, the transverse momentum of the jet is used instead. The second search looks in addition for disappearing tracks produced by BSM long-lived charged particles that decay within the volume of the tracking detector. No excess event yield is observed above the predicted standard model background. This is used to constrain a range of BSM models that predict the following: the pair production of gluinos and squarks in the context of supersymmetry models conserving R-parity, with or without intermediate long-lived charginos produced in the decay chain; the resonant production of a colored scalar state decaying to a massive Dirac fermion and a quark; or the pair production of scalar and vector leptoquarks each decaying to a neutrino and a top, bottom, or light-flavor quark. In most of the cases, the results obtained are the most stringent constraints to date.",
journal = "European Physical Journal C",
title = "Searches for physics beyond the standard model with the MT 2 variable in hadronic final states with and without disappearing tracks in proton–proton collisions at √s=13Te",
volume = "80",
number = "1",
pages = "Article 3",
doi = "10.1140/epjc/s10052-019-7493-x"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Searches for physics beyond the standard model with the MT 2 variable in hadronic final states with and without disappearing tracks in proton–proton collisions at √s=13Te.
European Physical Journal C, 80(1), Article 3. 
https://doi.org/10.1140/epjc/s10052-019-7493-x
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Searches for physics beyond the standard model with the MT 2 variable in hadronic final states with and without disappearing tracks in proton–proton collisions at √s=13Te. European Physical Journal C. 2020;80(1):Article 3
2
9
5
14

Search for top squark pair production in a final state with two tau leptons in proton-proton collisions at √s = 13 TeV

Sirunyan, A.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8822
AB  - A search for pair production of the supersymmetric partner of the top quark, the top squark, in proton-proton collision events at        s    $$ \sqrt{s} $$  = 13 TeV is presented in a final state containing hadronically decaying tau leptons and large missing transverse momentum. This final state is highly sensitive to high-tan β or higgsino-like scenarios in which decays of electroweak gauginos to tau leptons are dominant. The search uses a data set corresponding to an integrated luminosity of 77.2 fb −1, which was recorded with the CMS detector during 2016 and 2017. No significant excess is observed with respect to the background prediction. Exclusion limits at 95% confidence level are presented in the top squark and lightest neutralino mass plane within the framework of simplified models, in which top squark masses up to 1100 GeV are excluded for a nearly massless neutralino.
T2  - Journal of High Energy Physics
T1  - Search for top squark pair production in a final state with two tau leptons in proton-proton collisions at √s = 13 TeV
VL  - 2020
IS  - 2
SP  - 15
DO  - 10.1007/JHEP02(2020)015
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8822",
abstract = "A search for pair production of the supersymmetric partner of the top quark, the top squark, in proton-proton collision events at        s    $$ \sqrt{s} $$  = 13 TeV is presented in a final state containing hadronically decaying tau leptons and large missing transverse momentum. This final state is highly sensitive to high-tan β or higgsino-like scenarios in which decays of electroweak gauginos to tau leptons are dominant. The search uses a data set corresponding to an integrated luminosity of 77.2 fb −1, which was recorded with the CMS detector during 2016 and 2017. No significant excess is observed with respect to the background prediction. Exclusion limits at 95% confidence level are presented in the top squark and lightest neutralino mass plane within the framework of simplified models, in which top squark masses up to 1100 GeV are excluded for a nearly massless neutralino.",
journal = "Journal of High Energy Physics",
title = "Search for top squark pair production in a final state with two tau leptons in proton-proton collisions at √s = 13 TeV",
volume = "2020",
number = "2",
pages = "15",
doi = "10.1007/JHEP02(2020)015"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for top squark pair production in a final state with two tau leptons in proton-proton collisions at √s = 13 TeV.
Journal of High Energy Physics, 2020(2), 15. 
https://doi.org/10.1007/JHEP02(2020)015
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for top squark pair production in a final state with two tau leptons in proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics. 2020;2020(2):15

Production of Λc + baryons in proton-proton and lead-lead collisions at sNN=5.02TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8830
AB  - The transverse momentum (pT) spectra of inclusively produced Λc + baryons are measured via the exclusive decay channel Λc +→pK−π+ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λc + rapidity interval |y|<1 in the pT range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λc + for pT of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λc +/D0 production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common pT range.
T2  - Physics Letters B
T1  - Production of Λc + baryons in proton-proton and lead-lead collisions at sNN=5.02TeV
VL  - 803 C
SP  - 135328
DO  - 10.1016/j.physletb.2020.135328
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8830",
abstract = "The transverse momentum (pT) spectra of inclusively produced Λc + baryons are measured via the exclusive decay channel Λc +→pK−π+ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λc + rapidity interval |y|<1 in the pT range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λc + for pT of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λc +/D0 production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common pT range.",
journal = "Physics Letters B",
title = "Production of Λc + baryons in proton-proton and lead-lead collisions at sNN=5.02TeV",
volume = "803 C",
pages = "135328",
doi = "10.1016/j.physletb.2020.135328"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Production of Λc + baryons in proton-proton and lead-lead collisions at sNN=5.02TeV.
Physics Letters B, 803 C, 135328. 
https://doi.org/10.1016/j.physletb.2020.135328
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Production of Λc + baryons in proton-proton and lead-lead collisions at sNN=5.02TeV. Physics Letters B. 2020;803 C:135328
2
3
2
2

Running of the top quark mass from proton-proton collisions at s=13TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8831
AB  - The running of the top quark mass is experimentally investigated for the first time. The mass of the top quark in the modified minimal subtraction (MS‾) renormalization scheme is extracted from a comparison of the differential top quark-antiquark (tt¯) cross section as a function of the invariant mass of the tt¯ system to next-to-leading-order theoretical predictions. The differential cross section is determined at the parton level by means of a maximum-likelihood fit to distributions of final-state observables. The analysis is performed using tt¯ candidate events in the e± μ∓ channel in proton-proton collision data at a centre-of-mass energy of 13 TeV recorded by the CMS detector at the CERN LHC in 2016, corresponding to an integrated luminosity of 35.9fb−1. The extracted running is found to be compatible with the scale dependence predicted by the corresponding renormalization group equation. In this analysis, the running is probed up to a scale of the order of 1 TeV.
T2  - Physics Letters B
T1  - Running of the top quark mass from proton-proton collisions at s=13TeV
VL  - 803 C
SP  - 135263
DO  - 10.1016/j.physletb.2020.135263
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8831",
abstract = "The running of the top quark mass is experimentally investigated for the first time. The mass of the top quark in the modified minimal subtraction (MS‾) renormalization scheme is extracted from a comparison of the differential top quark-antiquark (tt¯) cross section as a function of the invariant mass of the tt¯ system to next-to-leading-order theoretical predictions. The differential cross section is determined at the parton level by means of a maximum-likelihood fit to distributions of final-state observables. The analysis is performed using tt¯ candidate events in the e± μ∓ channel in proton-proton collision data at a centre-of-mass energy of 13 TeV recorded by the CMS detector at the CERN LHC in 2016, corresponding to an integrated luminosity of 35.9fb−1. The extracted running is found to be compatible with the scale dependence predicted by the corresponding renormalization group equation. In this analysis, the running is probed up to a scale of the order of 1 TeV.",
journal = "Physics Letters B",
title = "Running of the top quark mass from proton-proton collisions at s=13TeV",
volume = "803 C",
pages = "135263",
doi = "10.1016/j.physletb.2020.135263"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Running of the top quark mass from proton-proton collisions at s=13TeV.
Physics Letters B, 803 C, 135263. 
https://doi.org/10.1016/j.physletb.2020.135263
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Running of the top quark mass from proton-proton collisions at s=13TeV. Physics Letters B. 2020;803 C:135263
1
3
3

Measurement of the tt-bb- production cross section in the all-jet final state in pp collisions at √s=13 TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8841
AB  - A measurement of the production cross section of top quark pairs in association with two b jets (tt‾bb‾) is presented using data collected in proton-proton collisions at s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb−1. The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5±0.3(stat)−1.3+1.6(syst)pb and also measured for two fiducial tt‾bb‾ definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5–2.4, corresponding to 1–2 standard deviations.
T2  - Physics Letters B
T1  - Measurement of the tt-bb- production cross section in the all-jet final state in pp collisions at √s=13 TeV
VL  - 803 C
SP  - 135285
DO  - 10.1016/j.physletb.2020.135285
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8841",
abstract = "A measurement of the production cross section of top quark pairs in association with two b jets (tt‾bb‾) is presented using data collected in proton-proton collisions at s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb−1. The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5±0.3(stat)−1.3+1.6(syst)pb and also measured for two fiducial tt‾bb‾ definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5–2.4, corresponding to 1–2 standard deviations.",
journal = "Physics Letters B",
title = "Measurement of the tt-bb- production cross section in the all-jet final state in pp collisions at √s=13 TeV",
volume = "803 C",
pages = "135285",
doi = "10.1016/j.physletb.2020.135285"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Measurement of the tt-bb- production cross section in the all-jet final state in pp collisions at √s=13 TeV.
Physics Letters B, 803 C, 135285. 
https://doi.org/10.1016/j.physletb.2020.135285
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Measurement of the tt-bb- production cross section in the all-jet final state in pp collisions at √s=13 TeV. Physics Letters B. 2020;803 C:135285
1
1
2

Search for direct pair production of supersymmetric partners to the τ lepton in proton–proton collisions at √s=13TeV

Sirunyan, A.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8842
AB  - A search is presented for $${\uptau }_{}^{}$$ τ  slepton pairs produced in proton–proton collisions at a center-of-mass energy of 13$$\,\text {TeV}$$ TeV . The search is carried out in events containing two $${\uptau }_{}^{}$$ τ  leptons in the final state, on the assumption that each $${\uptau }_{}^{}$$ τ  slepton decays primarily to a $${\uptau }_{}^{}$$ τ  lepton and a neutralino. Events are considered in which each $${\uptau }_{}^{}$$ τ  lepton decays to one or more hadrons and a neutrino, or in which one of the $${\uptau }_{}^{}$$ τ  leptons decays instead to an electron or a muon and two neutrinos. The data, collected with the CMS detector in 2016 and 2017, correspond to an integrated luminosity of 77.2$$\,\text {fb}^{-1}$$ fb-1 . The observed data are consistent with the standard model background expectation. The results are used to set 95% confidence level upper limits on the cross section for $${\uptau }_{}^{}$$ τ  slepton pair production in various models for $${\uptau }_{}^{}$$ τ  slepton masses between 90 and 200$$\,\text {GeV}$$ GeV  and neutralino masses of 1, 10, and 20$$\,\text {GeV}$$ GeV . In the case of purely left-handed $${\uptau }_{}^{}$$ τ  slepton production and decay to a $${\uptau }_{}^{}$$ τ  lepton and a neutralino with a mass of 1$$\,\text {GeV}$$ GeV , the strongest limit is obtained for a $${\uptau }_{}^{}$$ τ  slepton mass of 125$$\,\text {GeV}$$ GeV  at a factor of 1.14 larger than the theoretical cross section.
T2  - European Physical Journal C
T1  - Search for direct pair production of supersymmetric partners to the τ lepton in proton–proton collisions at √s=13TeV
VL  - 80
IS  - 3
SP  - 189
DO  - 10.1140/epjc/s10052-020-7739-7
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8842",
abstract = "A search is presented for $${\uptau }_{}^{}$$ τ  slepton pairs produced in proton–proton collisions at a center-of-mass energy of 13$$\,\text {TeV}$$ TeV . The search is carried out in events containing two $${\uptau }_{}^{}$$ τ  leptons in the final state, on the assumption that each $${\uptau }_{}^{}$$ τ  slepton decays primarily to a $${\uptau }_{}^{}$$ τ  lepton and a neutralino. Events are considered in which each $${\uptau }_{}^{}$$ τ  lepton decays to one or more hadrons and a neutrino, or in which one of the $${\uptau }_{}^{}$$ τ  leptons decays instead to an electron or a muon and two neutrinos. The data, collected with the CMS detector in 2016 and 2017, correspond to an integrated luminosity of 77.2$$\,\text {fb}^{-1}$$ fb-1 . The observed data are consistent with the standard model background expectation. The results are used to set 95% confidence level upper limits on the cross section for $${\uptau }_{}^{}$$ τ  slepton pair production in various models for $${\uptau }_{}^{}$$ τ  slepton masses between 90 and 200$$\,\text {GeV}$$ GeV  and neutralino masses of 1, 10, and 20$$\,\text {GeV}$$ GeV . In the case of purely left-handed $${\uptau }_{}^{}$$ τ  slepton production and decay to a $${\uptau }_{}^{}$$ τ  lepton and a neutralino with a mass of 1$$\,\text {GeV}$$ GeV , the strongest limit is obtained for a $${\uptau }_{}^{}$$ τ  slepton mass of 125$$\,\text {GeV}$$ GeV  at a factor of 1.14 larger than the theoretical cross section.",
journal = "European Physical Journal C",
title = "Search for direct pair production of supersymmetric partners to the τ lepton in proton–proton collisions at √s=13TeV",
volume = "80",
number = "3",
pages = "189",
doi = "10.1140/epjc/s10052-020-7739-7"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for direct pair production of supersymmetric partners to the τ lepton in proton–proton collisions at √s=13TeV.
European Physical Journal C, 80(3), 189. 
https://doi.org/10.1140/epjc/s10052-020-7739-7
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for direct pair production of supersymmetric partners to the τ lepton in proton–proton collisions at √s=13TeV. European Physical Journal C. 2020;80(3):189
4
2
2

Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at √s = 13 TeV

Sirunyan, A.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8843
AB  - The cross section of top quark pair production is measured in the tt¯→(ℓνℓ)(τhντ)bb¯ final state, where τh refers to the hadronic decays of the τ lepton, and ℓ is either an electron or a muon. The data sample corresponds to an integrated luminosity of 35.9 fb−1 collected in proton-proton collisions at s = 13 TeV with the CMS detector. The measured cross section is σt t ¯ = 781 ± 7 (stat) ± 62 (syst) ± 20 (lumi) pb, and the ratio of the partial width Γ(t → τντb) to the total decay width of the top quark is measured to be 0.1050 ± 0.0009 (stat) ± 0.0071 (syst). This is the first measurement of the t t ¯ production cross section in proton-proton collisions at s = 13 TeV that explicitly includes τ leptons. The ratio of the cross sections in the ℓτh and ℓℓ final states yields a value Rℓτh/ll = 0.973 ± 0.009 (stat) ± 0.066 (syst), consistent with lepton universality.
T2  - Journal of High Energy Physics
T1  - Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at √s = 13 TeV
VL  - 2020
IS  - 2
SP  - 191
DO  - 10.1007/JHEP02(2020)191
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8843",
abstract = "The cross section of top quark pair production is measured in the tt¯→(ℓνℓ)(τhντ)bb¯ final state, where τh refers to the hadronic decays of the τ lepton, and ℓ is either an electron or a muon. The data sample corresponds to an integrated luminosity of 35.9 fb−1 collected in proton-proton collisions at s = 13 TeV with the CMS detector. The measured cross section is σt t ¯ = 781 ± 7 (stat) ± 62 (syst) ± 20 (lumi) pb, and the ratio of the partial width Γ(t → τντb) to the total decay width of the top quark is measured to be 0.1050 ± 0.0009 (stat) ± 0.0071 (syst). This is the first measurement of the t t ¯ production cross section in proton-proton collisions at s = 13 TeV that explicitly includes τ leptons. The ratio of the cross sections in the ℓτh and ℓℓ final states yields a value Rℓτh/ll = 0.973 ± 0.009 (stat) ± 0.066 (syst), consistent with lepton universality.",
journal = "Journal of High Energy Physics",
title = "Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at √s = 13 TeV",
volume = "2020",
number = "2",
pages = "191",
doi = "10.1007/JHEP02(2020)191"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at √s = 13 TeV.
Journal of High Energy Physics, 2020(2), 191. 
https://doi.org/10.1007/JHEP02(2020)191
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at √s = 13 TeV. Journal of High Energy Physics. 2020;2020(2):191

Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at √s = 13 TeV

Sirunyan, A.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8856
AB  - A search for a heavy Higgs boson in the mass range from 0.2 to 3.0 TeV, decaying to a pair of W bosons, is presented. The analysis is based on proton-proton collisions at s = 13 TeV recorded by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb−1. The W boson pair decays are reconstructed in the 2ℓ2ν and ℓν2q final states (with ℓ = e or μ). Both gluon fusion and vector boson fusion production of the signal are considered. Interference effects between the signal and background are also taken into account. The observed data are consistent with the standard model (SM) expectation. Combined upper limits at 95% confidence level on the product of the cross section and branching fraction exclude a heavy Higgs boson with SM-like couplings and decays up to 1870 GeV. Exclusion limits are also set in the context of a number of two-Higgs-doublet model formulations, further reducing the allowed parameter space for SM extensions.
T2  - Journal of High Energy Physics
T1  - Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at √s = 13 TeV
VL  - 2020
IS  - 3
SP  - 34
DO  - 10.1007/JHEP03(2020)034
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8856",
abstract = "A search for a heavy Higgs boson in the mass range from 0.2 to 3.0 TeV, decaying to a pair of W bosons, is presented. The analysis is based on proton-proton collisions at s = 13 TeV recorded by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb−1. The W boson pair decays are reconstructed in the 2ℓ2ν and ℓν2q final states (with ℓ = e or μ). Both gluon fusion and vector boson fusion production of the signal are considered. Interference effects between the signal and background are also taken into account. The observed data are consistent with the standard model (SM) expectation. Combined upper limits at 95% confidence level on the product of the cross section and branching fraction exclude a heavy Higgs boson with SM-like couplings and decays up to 1870 GeV. Exclusion limits are also set in the context of a number of two-Higgs-doublet model formulations, further reducing the allowed parameter space for SM extensions.",
journal = "Journal of High Energy Physics",
title = "Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at √s = 13 TeV",
volume = "2020",
number = "3",
pages = "34",
doi = "10.1007/JHEP03(2020)034"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at √s = 13 TeV.
Journal of High Energy Physics, 2020(3), 34. 
https://doi.org/10.1007/JHEP03(2020)034
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics. 2020;2020(3):34
2
10
3
9

Search for dark matter particles produced in association with a Higgs boson in proton-proton collisions at √s = 13 TeV

Sirunyan, A.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8857
AB  - A search for dark matter (DM) particles is performed using events with a Higgs boson candidate and large missing transverse momentum. The analysis is based on proton- proton collision data at a center-of-mass energy of 13 TeV collected by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb−1. The search is performed in five Higgs boson decay channels: h → b b ¯ , γγ, τ+τ−, W+W−, and ZZ. The results from the individual channels are combined to maximize the sensitivity of the analysis. No significant excess over the expected standard model background is observed in any of the five channels or in their combination. Limits are set on DM production in the context of two simplified models. The results are also interpreted in terms of a spin-independent DM-nucleon scattering cross section and compared to those from direct-detection DM experiments. This is the first search for DM particles produced in association with a Higgs boson decaying to a pair of W or Z bosons, and the first statistical combination based on five Higgs boson decay channels.
T2  - Journal of High Energy Physics
T1  - Search for dark matter particles produced in association with a Higgs boson in proton-proton collisions at √s = 13 TeV
VL  - 2020
IS  - 3
SP  - 25
DO  - 10.1007/JHEP03(2020)025
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8857",
abstract = "A search for dark matter (DM) particles is performed using events with a Higgs boson candidate and large missing transverse momentum. The analysis is based on proton- proton collision data at a center-of-mass energy of 13 TeV collected by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb−1. The search is performed in five Higgs boson decay channels: h → b b ¯ , γγ, τ+τ−, W+W−, and ZZ. The results from the individual channels are combined to maximize the sensitivity of the analysis. No significant excess over the expected standard model background is observed in any of the five channels or in their combination. Limits are set on DM production in the context of two simplified models. The results are also interpreted in terms of a spin-independent DM-nucleon scattering cross section and compared to those from direct-detection DM experiments. This is the first search for DM particles produced in association with a Higgs boson decaying to a pair of W or Z bosons, and the first statistical combination based on five Higgs boson decay channels.",
journal = "Journal of High Energy Physics",
title = "Search for dark matter particles produced in association with a Higgs boson in proton-proton collisions at √s = 13 TeV",
volume = "2020",
number = "3",
pages = "25",
doi = "10.1007/JHEP03(2020)025"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for dark matter particles produced in association with a Higgs boson in proton-proton collisions at √s = 13 TeV.
Journal of High Energy Physics, 2020(3), 25. 
https://doi.org/10.1007/JHEP03(2020)025
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for dark matter particles produced in association with a Higgs boson in proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics. 2020;2020(3):25
3
1
3

A multi-dimensional search for new heavy resonances decaying to boosted WW , WZ , or ZZ boson pairs in the dijet final state at 13 Te

Sirunyan, A.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8893
AB  - A search in an all-jet final state for new massive resonances decaying to WW, WZ, or ZZ boson pairs using a novel analysis method is presented. The analysis is performed on data corresponding to an integrated luminosity of 77.3 fb-1 recorded with the CMS experiment at the LHC at a centre-of-mass energy of 13 Te. The search is focussed on potential narrow-width resonances with masses above 1.2 Te, where the decay products of each W or Z boson are expected to be collimated into a single, large-radius jet. The signal is extracted using a three-dimensional maximum likelihood fit of the two jet masses and the dijet invariant mass, yielding an improvement in sensitivity of up to 30% relative to previous search methods. No excess is observed above the estimated standard model background. In a heavy vector triplet model, spin-1 Z ′ and W ′ resonances with masses below 3.5 and 3.8 Te, respectively, are excluded at 95% confidence level. In a bulk graviton model, upper limits on cross sections are set between 27 and 0.2 fb for resonance masses between 1.2 and 5.2 Te, respectively. The limits presented in this paper are the best to date in the dijet final state.
T2  - European Physical Journal C
T1  - A multi-dimensional search for new heavy resonances decaying to boosted WW , WZ , or ZZ boson pairs in the dijet final state at 13 Te
VL  - 80
IS  - 3
SP  - 237
DO  - 10.1140/epjc/s10052-020-7773-5
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8893",
abstract = "A search in an all-jet final state for new massive resonances decaying to WW, WZ, or ZZ boson pairs using a novel analysis method is presented. The analysis is performed on data corresponding to an integrated luminosity of 77.3 fb-1 recorded with the CMS experiment at the LHC at a centre-of-mass energy of 13 Te. The search is focussed on potential narrow-width resonances with masses above 1.2 Te, where the decay products of each W or Z boson are expected to be collimated into a single, large-radius jet. The signal is extracted using a three-dimensional maximum likelihood fit of the two jet masses and the dijet invariant mass, yielding an improvement in sensitivity of up to 30% relative to previous search methods. No excess is observed above the estimated standard model background. In a heavy vector triplet model, spin-1 Z ′ and W ′ resonances with masses below 3.5 and 3.8 Te, respectively, are excluded at 95% confidence level. In a bulk graviton model, upper limits on cross sections are set between 27 and 0.2 fb for resonance masses between 1.2 and 5.2 Te, respectively. The limits presented in this paper are the best to date in the dijet final state.",
journal = "European Physical Journal C",
title = "A multi-dimensional search for new heavy resonances decaying to boosted WW , WZ , or ZZ boson pairs in the dijet final state at 13 Te",
volume = "80",
number = "3",
pages = "237",
doi = "10.1140/epjc/s10052-020-7773-5"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). A multi-dimensional search for new heavy resonances decaying to boosted WW , WZ , or ZZ boson pairs in the dijet final state at 13 Te.
European Physical Journal C, 80(3), 237. 
https://doi.org/10.1140/epjc/s10052-020-7773-5
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. A multi-dimensional search for new heavy resonances decaying to boosted WW , WZ , or ZZ boson pairs in the dijet final state at 13 Te. European Physical Journal C. 2020;80(3):237
2
7
7
7

Search for a heavy pseudoscalar Higgs boson decaying into a 125 GeV Higgs boson and a Z boson in final states with two tau and two light leptons at √s = 13 TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8895
AB  - A search is performed for a pseudoscalar Higgs boson, A, decaying into a 125 GeV Higgs boson h and a Z boson. The h boson is specifically targeted in its decay into a pair of tau leptons, while the Z boson decays into a pair of electrons or muons. A data sample of proton-proton collisions collected by the CMS experiment at the LHC at s = 13 TeV is used, corresponding to an integrated luminosity of 35.9 fb−1. No excess above the standard model background expectations is observed in data. A model-independent upper limit is set on the product of the gluon fusion production cross section for the A boson and the branching fraction to Zh → ℓℓττ. The observed upper limit at 95% confidence level ranges from 27 to 5 fb for A boson masses from 220 to 400 GeV, respectively. The results are used to constrain the extended Higgs sector parameters for two benchmark scenarios of the minimal supersymmetric standard model. [Figure not available: see fulltext.] © 2020, The Author(s).
T2  - Journal of High Energy Physics
T1  - Search for a heavy pseudoscalar Higgs boson decaying into a 125 GeV Higgs boson and a Z boson in final states with two tau and two light leptons at √s = 13 TeV
VL  - 2020
IS  - 3
SP  - 65
DO  - 10.1007/JHEP03(2020)065
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8895",
abstract = "A search is performed for a pseudoscalar Higgs boson, A, decaying into a 125 GeV Higgs boson h and a Z boson. The h boson is specifically targeted in its decay into a pair of tau leptons, while the Z boson decays into a pair of electrons or muons. A data sample of proton-proton collisions collected by the CMS experiment at the LHC at s = 13 TeV is used, corresponding to an integrated luminosity of 35.9 fb−1. No excess above the standard model background expectations is observed in data. A model-independent upper limit is set on the product of the gluon fusion production cross section for the A boson and the branching fraction to Zh → ℓℓττ. The observed upper limit at 95% confidence level ranges from 27 to 5 fb for A boson masses from 220 to 400 GeV, respectively. The results are used to constrain the extended Higgs sector parameters for two benchmark scenarios of the minimal supersymmetric standard model. [Figure not available: see fulltext.] © 2020, The Author(s).",
journal = "Journal of High Energy Physics",
title = "Search for a heavy pseudoscalar Higgs boson decaying into a 125 GeV Higgs boson and a Z boson in final states with two tau and two light leptons at √s = 13 TeV",
volume = "2020",
number = "3",
pages = "65",
doi = "10.1007/JHEP03(2020)065"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for a heavy pseudoscalar Higgs boson decaying into a 125 GeV Higgs boson and a Z boson in final states with two tau and two light leptons at √s = 13 TeV.
Journal of High Energy Physics, 2020(3), 65. 
https://doi.org/10.1007/JHEP03(2020)065
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for a heavy pseudoscalar Higgs boson decaying into a 125 GeV Higgs boson and a Z boson in final states with two tau and two light leptons at √s = 13 TeV. Journal of High Energy Physics. 2020;2020(3):65
1
2
2

Search for physics beyond the standard model in multilepton final states in proton-proton collisions at √s = 13 TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Adžić, Petar; Ćirković, Predrag; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8896
AB  - A search for physics beyond the standard model in events with at least three charged leptons (electrons or muons) is presented. The data sample corresponds to an integrated luminosity of 137 fb−1 of proton-proton collisions at s = 13 TeV, collected with the CMS detector at the LHC in 2016–2018. The two targeted signal processes are pair production of type-III seesaw heavy fermions and production of a light scalar or pseudoscalar boson in association with a pair of top quarks. The heavy fermions may be manifested as an excess of events with large values of leptonic transverse momenta or missing transverse momentum. The light scalars or pseudoscalars may create a localized excess in the dilepton mass spectra. The results exclude heavy fermions of the type-III seesaw model for masses below 880 GeV at 95% confidence level in the scenario of equal branching fractions to each lepton flavor. This is the most restrictive limit on the flavor-democratic scenario of the type-III seesaw model to date. Assuming a Yukawa coupling of unit strength to top quarks, branching fractions of new scalar (pseudoscalar) bosons to dielectrons or dimuons above 0.004 (0.03) and 0.04 (0.03) are excluded at 95% confidence level for masses in the range 15–75 and 108–340 GeV, respectively. These are the first limits in these channels on an extension of the standard model with scalar or pseudoscalar particles. [Figure not available: see fulltext.] © 2020, The Author(s).
T2  - Journal of High Energy Physics
T1  - Search for physics beyond the standard model in multilepton final states in proton-proton collisions at √s = 13 TeV
VL  - 2020
IS  - 3
SP  - 51
DO  - 10.1007/JHEP03(2020)051
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8896",
abstract = "A search for physics beyond the standard model in events with at least three charged leptons (electrons or muons) is presented. The data sample corresponds to an integrated luminosity of 137 fb−1 of proton-proton collisions at s = 13 TeV, collected with the CMS detector at the LHC in 2016–2018. The two targeted signal processes are pair production of type-III seesaw heavy fermions and production of a light scalar or pseudoscalar boson in association with a pair of top quarks. The heavy fermions may be manifested as an excess of events with large values of leptonic transverse momenta or missing transverse momentum. The light scalars or pseudoscalars may create a localized excess in the dilepton mass spectra. The results exclude heavy fermions of the type-III seesaw model for masses below 880 GeV at 95% confidence level in the scenario of equal branching fractions to each lepton flavor. This is the most restrictive limit on the flavor-democratic scenario of the type-III seesaw model to date. Assuming a Yukawa coupling of unit strength to top quarks, branching fractions of new scalar (pseudoscalar) bosons to dielectrons or dimuons above 0.004 (0.03) and 0.04 (0.03) are excluded at 95% confidence level for masses in the range 15–75 and 108–340 GeV, respectively. These are the first limits in these channels on an extension of the standard model with scalar or pseudoscalar particles. [Figure not available: see fulltext.] © 2020, The Author(s).",
journal = "Journal of High Energy Physics",
title = "Search for physics beyond the standard model in multilepton final states in proton-proton collisions at √s = 13 TeV",
volume = "2020",
number = "3",
pages = "51",
doi = "10.1007/JHEP03(2020)051"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for physics beyond the standard model in multilepton final states in proton-proton collisions at √s = 13 TeV.
Journal of High Energy Physics, 2020(3), 51. 
https://doi.org/10.1007/JHEP03(2020)051
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for physics beyond the standard model in multilepton final states in proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics. 2020;2020(3):51
3
4
4
4

Search for new neutral Higgs bosons through the H → ZA→ ℓ+ℓ−b b ¯ process in pp collisions at √s = 13 TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8897
AB  - This paper reports on a search for an extension to the scalar sector of the standard model, where a new CP-even (odd) boson decays to a Z boson and a lighter CP-odd (even) boson, and the latter further decays to a b quark pair. The Z boson is reconstructed via its decays to electron or muon pairs. The analysed data were recorded in proton-proton collisions at a center-of-mass energy s = 13 TeV, collected by the CMS experiment at the LHC during 2016, corresponding to an integrated luminosity of 35.9 fb−1. Data and predictions from the standard model are in agreement within the uncertainties. Upper limits at 95% confidence level are set on the production cross section times branching fraction, with masses of the new bosons up to 1000 GeV. The results are interpreted in the context of the two-Higgs-doublet model. [Figure not available: see fulltext.]. © 2020, The Author(s).
T2  - Journal of High Energy Physics
T1  - Search for new neutral Higgs bosons through the H → ZA→ ℓ+ℓ−b b ¯ process in pp collisions at √s = 13 TeV
VL  - 2020
IS  - 3
SP  - 55
DO  - 10.1007/JHEP03(2020)055
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8897",
abstract = "This paper reports on a search for an extension to the scalar sector of the standard model, where a new CP-even (odd) boson decays to a Z boson and a lighter CP-odd (even) boson, and the latter further decays to a b quark pair. The Z boson is reconstructed via its decays to electron or muon pairs. The analysed data were recorded in proton-proton collisions at a center-of-mass energy s = 13 TeV, collected by the CMS experiment at the LHC during 2016, corresponding to an integrated luminosity of 35.9 fb−1. Data and predictions from the standard model are in agreement within the uncertainties. Upper limits at 95% confidence level are set on the production cross section times branching fraction, with masses of the new bosons up to 1000 GeV. The results are interpreted in the context of the two-Higgs-doublet model. [Figure not available: see fulltext.]. © 2020, The Author(s).",
journal = "Journal of High Energy Physics",
title = "Search for new neutral Higgs bosons through the H → ZA→ ℓ+ℓ−b b ¯ process in pp collisions at √s = 13 TeV",
volume = "2020",
number = "3",
pages = "55",
doi = "10.1007/JHEP03(2020)055"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for new neutral Higgs bosons through the H → ZA→ ℓ+ℓ−b b ¯ process in pp collisions at √s = 13 TeV.
Journal of High Energy Physics, 2020(3), 55. 
https://doi.org/10.1007/JHEP03(2020)055
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for new neutral Higgs bosons through the H → ZA→ ℓ+ℓ−b b ¯ process in pp collisions at √s = 13 TeV. Journal of High Energy Physics. 2020;2020(3):55
1
4
1
4

Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8898
AB  - A measurement of the inclusive cross section of top quark pair production in association with a Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC is performed. The data sample corresponds to an integrated luminosity of 77.5 fb−1, collected by the CMS experiment during 2016 and 2017. The measurement is performed using final states containing three or four charged leptons (electrons or muons), and the Z boson is detected through its decay to an oppositely charged lepton pair. The production cross section is measured to be σ(t t ¯ Z) = 0.95 ± 0.05 (stat) ± 0.06 (syst) pb. For the first time, differential cross sections are measured as functions of the transverse momentum of the Z boson and the angular distribution of the negatively charged lepton from the Z boson decay. The most stringent direct limits to date on the anomalous couplings of the top quark to the Z boson are presented, including constraints on the Wilson coefficients in the framework of the standard model effective field theory. [Figure not available: see fulltext.] © 2020, The Author(s).
T2  - Journal of High Energy Physics
T1  - Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV
VL  - 2020
IS  - 3
SP  - 56
DO  - 10.1007/JHEP03(2020)056
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8898",
abstract = "A measurement of the inclusive cross section of top quark pair production in association with a Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC is performed. The data sample corresponds to an integrated luminosity of 77.5 fb−1, collected by the CMS experiment during 2016 and 2017. The measurement is performed using final states containing three or four charged leptons (electrons or muons), and the Z boson is detected through its decay to an oppositely charged lepton pair. The production cross section is measured to be σ(t t ¯ Z) = 0.95 ± 0.05 (stat) ± 0.06 (syst) pb. For the first time, differential cross sections are measured as functions of the transverse momentum of the Z boson and the angular distribution of the negatively charged lepton from the Z boson decay. The most stringent direct limits to date on the anomalous couplings of the top quark to the Z boson are presented, including constraints on the Wilson coefficients in the framework of the standard model effective field theory. [Figure not available: see fulltext.] © 2020, The Author(s).",
journal = "Journal of High Energy Physics",
title = "Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV",
volume = "2020",
number = "3",
pages = "56",
doi = "10.1007/JHEP03(2020)056"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV.
Journal of High Energy Physics, 2020(3), 56. 
https://doi.org/10.1007/JHEP03(2020)056
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics. 2020;2020(3):56
3
5
6

Search for lepton flavour violating decays of a neutral heavy Higgs boson to μτ and eτ in proton-proton collisions at √s = 13 TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8915
AB  - A search for lepton flavour violating decays of a neutral non-standard-model Higgs boson in the μτ and eτ decay modes is presented. The search is based on proton-proton collisions at a center of mass energy s = 13 TeV collected with the CMS detector in 2016, corresponding to an integrated luminosity of 35.9 fb−1. The τ leptons are reconstructed in the leptonic and hadronic decay modes. No signal is observed in the mass range 200–900 GeV. At 95% confidence level, the observed (expected) upper limits on the production cross section multiplied by the branching fraction vary from 51.9 (57.4) fb to 1.6 (2.1) fb for the μτ and from 94.1 (91.6) fb to 2.3 (2.3) fb for the eτ decay modes. [Figure not available: see fulltext.]. © 2020, The Author(s).
T2  - Journal of High Energy Physics
T1  - Search for lepton flavour violating decays of a neutral heavy Higgs boson to μτ and eτ in proton-proton collisions at √s = 13 TeV
VL  - 2020
IS  - 3
DO  - 10.1007/JHEP03(2020)103
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8915",
abstract = "A search for lepton flavour violating decays of a neutral non-standard-model Higgs boson in the μτ and eτ decay modes is presented. The search is based on proton-proton collisions at a center of mass energy s = 13 TeV collected with the CMS detector in 2016, corresponding to an integrated luminosity of 35.9 fb−1. The τ leptons are reconstructed in the leptonic and hadronic decay modes. No signal is observed in the mass range 200–900 GeV. At 95% confidence level, the observed (expected) upper limits on the production cross section multiplied by the branching fraction vary from 51.9 (57.4) fb to 1.6 (2.1) fb for the μτ and from 94.1 (91.6) fb to 2.3 (2.3) fb for the eτ decay modes. [Figure not available: see fulltext.]. © 2020, The Author(s).",
journal = "Journal of High Energy Physics",
title = "Search for lepton flavour violating decays of a neutral heavy Higgs boson to μτ and eτ in proton-proton collisions at √s = 13 TeV",
volume = "2020",
number = "3",
doi = "10.1007/JHEP03(2020)103"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for lepton flavour violating decays of a neutral heavy Higgs boson to μτ and eτ in proton-proton collisions at √s = 13 TeV.
Journal of High Energy Physics, 2020(3). 
https://doi.org/10.1007/JHEP03(2020)103
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for lepton flavour violating decays of a neutral heavy Higgs boson to μτ and eτ in proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics. 2020;2020(3)
5
3
2
3

A search for the standard model Higgs boson decaying to charm quarks

Sirunyan, A.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8925
AB  - A direct search for the standard model Higgs boson, H, produced in association with a vector boson, V (W or Z), and decaying to a charm quark pair is presented. The search uses a data set of proton-proton collisions corresponding to an integrated luminosity of 35.9 fb −1, collected by the CMS experiment at the LHC in 2016, at a centre-of-mass energy of 13 TeV. The search is carried out in mutually exclusive channels targeting specific decays of the vector bosons: W → ℓν, Z → ℓℓ, and Z → νν, where ℓ is an electron or a muon. To fully exploit the topology of the H boson decay, two strategies are followed. In the first one, targeting lower vector boson transverse momentum, the H boson candidate is reconstructed via two resolved jets arising from the two charm quarks from the H boson decay. A second strategy identifies the case where the two charm quark jets from the H boson decay merge to form a single jet, which generally only occurs when the vector boson has higher transverse momentum. Both strategies make use of novel methods for charm jet identification, while jet substructure techniques are also exploited to suppress the background in the merged-jet topology. The two analyses are combined to yield a 95% confidence level observed (expected) upper limit on the cross section    σ  VH  ℬ   H → c  c ¯      $$ \sigma \left(\mathrm{VH}\right)\mathrm{\mathcal{B}}\left(\mathrm{H}\to \mathrm{c}\overline{\mathrm{c}}\right) $$  of 4.5      2.4  − 0.7   + 1.0      $$ \left({2.4}_{-0.7}^{+1.0}\right) $$  pb, corresponding to 70 (37) times the standard model prediction.
T2  - Journal of High Energy Physics
T1  - A search for the standard model Higgs boson decaying to charm quarks
VL  - 2020
IS  - 3
SP  - 131
DO  - 10.1007/JHEP03(2020)131
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8925",
abstract = "A direct search for the standard model Higgs boson, H, produced in association with a vector boson, V (W or Z), and decaying to a charm quark pair is presented. The search uses a data set of proton-proton collisions corresponding to an integrated luminosity of 35.9 fb −1, collected by the CMS experiment at the LHC in 2016, at a centre-of-mass energy of 13 TeV. The search is carried out in mutually exclusive channels targeting specific decays of the vector bosons: W → ℓν, Z → ℓℓ, and Z → νν, where ℓ is an electron or a muon. To fully exploit the topology of the H boson decay, two strategies are followed. In the first one, targeting lower vector boson transverse momentum, the H boson candidate is reconstructed via two resolved jets arising from the two charm quarks from the H boson decay. A second strategy identifies the case where the two charm quark jets from the H boson decay merge to form a single jet, which generally only occurs when the vector boson has higher transverse momentum. Both strategies make use of novel methods for charm jet identification, while jet substructure techniques are also exploited to suppress the background in the merged-jet topology. The two analyses are combined to yield a 95% confidence level observed (expected) upper limit on the cross section    σ  VH  ℬ   H → c  c ¯      $$ \sigma \left(\mathrm{VH}\right)\mathrm{\mathcal{B}}\left(\mathrm{H}\to \mathrm{c}\overline{\mathrm{c}}\right) $$  of 4.5      2.4  − 0.7   + 1.0      $$ \left({2.4}_{-0.7}^{+1.0}\right) $$  pb, corresponding to 70 (37) times the standard model prediction.",
journal = "Journal of High Energy Physics",
title = "A search for the standard model Higgs boson decaying to charm quarks",
volume = "2020",
number = "3",
pages = "131",
doi = "10.1007/JHEP03(2020)131"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). A search for the standard model Higgs boson decaying to charm quarks.
Journal of High Energy Physics, 2020(3), 131. 
https://doi.org/10.1007/JHEP03(2020)131
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. A search for the standard model Higgs boson decaying to charm quarks. Journal of High Energy Physics. 2020;2020(3):131
5
2
7
5

Study of J/ψ meson production inside jets in pp collisions at s=8TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8935
AB  - A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at s=8TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb$^{−1}$ collected with the CMS detector at the LHC. For events with at least one observed jet, the angular separation between the J/ψ meson and the jet is used to test whether the J/ψ meson is part of the jet. The analysis shows that most prompt J/ψ mesons having energy above 15 GeV and rapidity |y|<1 are contained in jets with pseudorapidity |ηjet|<1. The differential distributions of the probability to have a J/ψ meson contained in a jet as a function of jet energy for a fixed J/ψ energy fraction are compared to a theoretical model using the fragmenting jet function approach. The data agree best with fragmenting jet function calculations that use a long-distance matrix element parameter set in which prompt J/ψ mesons are predicted to be unpolarized. This technique demonstrates a new way to test predictions for prompt J/ψ production using nonrelativistic quantum chromodynamics.
T2  - Physics Letters B
T1  - Study of J/ψ meson production inside jets in pp collisions at s=8TeV
VL  - 804 C
SP  - 135409
DO  - 10.1016/j.physletb.2020.135409
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8935",
abstract = "A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at s=8TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb$^{−1}$ collected with the CMS detector at the LHC. For events with at least one observed jet, the angular separation between the J/ψ meson and the jet is used to test whether the J/ψ meson is part of the jet. The analysis shows that most prompt J/ψ mesons having energy above 15 GeV and rapidity |y|<1 are contained in jets with pseudorapidity |ηjet|<1. The differential distributions of the probability to have a J/ψ meson contained in a jet as a function of jet energy for a fixed J/ψ energy fraction are compared to a theoretical model using the fragmenting jet function approach. The data agree best with fragmenting jet function calculations that use a long-distance matrix element parameter set in which prompt J/ψ mesons are predicted to be unpolarized. This technique demonstrates a new way to test predictions for prompt J/ψ production using nonrelativistic quantum chromodynamics.",
journal = "Physics Letters B",
title = "Study of J/ψ meson production inside jets in pp collisions at s=8TeV",
volume = "804 C",
pages = "135409",
doi = "10.1016/j.physletb.2020.135409"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Study of J/ψ meson production inside jets in pp collisions at s=8TeV.
Physics Letters B, 804 C, 135409. 
https://doi.org/10.1016/j.physletb.2020.135409
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Study of J/ψ meson production inside jets in pp collisions at s=8TeV. Physics Letters B. 2020;804 C:135409
1
1
2

Search for dijet resonances using events with three jets in proton-proton collisions at s=13TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8947
AB  - A search for a narrow resonance with a mass between 350 and 700 GeV, and decaying into a pair of jets, is performed using proton-proton collision events containing at least three jets. The data sample corresponds to an integrated luminosity of 18.3 fb−1 recorded at s=13TeV with the CMS detector. Data are collected with a technique known as “data scouting”, in which the events are reconstructed, selected, and recorded at a high rate in a compact form by the high-level trigger. The three-jet final state provides sensitivity to lower resonance masses than in previous searches using the data scouting technique. The spectrum of the dijet invariant mass, calculated from the two jets with the largest transverse momenta in the event, is used to search for a resonance. No significant excess over a smoothly falling background is found. Limits at 95% confidence level are set on the production cross section of a narrow dijet resonance and compared with the cross section of a vector dark matter mediator coupling to dark matter particles and quarks. Translating to a model where the narrow resonance interacts only with quarks, upper limits on this coupling range between 0.10 and 0.15, depending on the resonance mass. These results represent the most stringent upper limits in the mass range between 350 and 450 GeV obtained with a flavor-inclusive dijet resonance search.
T2  - Physics Letters B
T1  - Search for dijet resonances using events with three jets in proton-proton collisions at s=13TeV
VL  - 805 C
SP  - 135448
DO  - 10.1016/j.physletb.2020.135448
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8947",
abstract = "A search for a narrow resonance with a mass between 350 and 700 GeV, and decaying into a pair of jets, is performed using proton-proton collision events containing at least three jets. The data sample corresponds to an integrated luminosity of 18.3 fb−1 recorded at s=13TeV with the CMS detector. Data are collected with a technique known as “data scouting”, in which the events are reconstructed, selected, and recorded at a high rate in a compact form by the high-level trigger. The three-jet final state provides sensitivity to lower resonance masses than in previous searches using the data scouting technique. The spectrum of the dijet invariant mass, calculated from the two jets with the largest transverse momenta in the event, is used to search for a resonance. No significant excess over a smoothly falling background is found. Limits at 95% confidence level are set on the production cross section of a narrow dijet resonance and compared with the cross section of a vector dark matter mediator coupling to dark matter particles and quarks. Translating to a model where the narrow resonance interacts only with quarks, upper limits on this coupling range between 0.10 and 0.15, depending on the resonance mass. These results represent the most stringent upper limits in the mass range between 350 and 450 GeV obtained with a flavor-inclusive dijet resonance search.",
journal = "Physics Letters B",
title = "Search for dijet resonances using events with three jets in proton-proton collisions at s=13TeV",
volume = "805 C",
pages = "135448",
doi = "10.1016/j.physletb.2020.135448"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for dijet resonances using events with three jets in proton-proton collisions at s=13TeV.
Physics Letters B, 805 C, 135448. 
https://doi.org/10.1016/j.physletb.2020.135448
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for dijet resonances using events with three jets in proton-proton collisions at s=13TeV. Physics Letters B. 2020;805 C:135448
1
3

A measurement of the Higgs boson mass in the diphoton decay channel

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8948
AB  - A measurement of the mass of the Higgs boson in the diphoton decay channel is presented. This analysis is based on 35.9fb−1 of proton-proton collision data collected during the 2016 LHC running period, with the CMS detector at a centre-of-mass energy of 13 TeV. A refined detector calibration and new analysis techniques have been used to improve the precision of this measurement. The Higgs boson mass is measured to be mH=125.78±0.26GeV. This is combined with a measurement of mH already performed in the H→ZZ→4ℓ decay channel using the same data set, giving mH=125.46±0.16GeV. This result, when further combined with an earlier measurement of mH using data collected in 2011 and 2012 with the CMS detector, gives a value for the Higgs boson mass of mH=125.38±0.14GeV. This is currently the most precise measurement of the mass of the Higgs boson.
T2  - Physics Letters B
T1  - A measurement of the Higgs boson mass in the diphoton decay channel
VL  - 805 C
SP  - 135425
DO  - 10.1016/j.physletb.2020.135425
ER  - 
@article{
author = "Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8948",
abstract = "A measurement of the mass of the Higgs boson in the diphoton decay channel is presented. This analysis is based on 35.9fb−1 of proton-proton collision data collected during the 2016 LHC running period, with the CMS detector at a centre-of-mass energy of 13 TeV. A refined detector calibration and new analysis techniques have been used to improve the precision of this measurement. The Higgs boson mass is measured to be mH=125.78±0.26GeV. This is combined with a measurement of mH already performed in the H→ZZ→4ℓ decay channel using the same data set, giving mH=125.46±0.16GeV. This result, when further combined with an earlier measurement of mH using data collected in 2011 and 2012 with the CMS detector, gives a value for the Higgs boson mass of mH=125.38±0.14GeV. This is currently the most precise measurement of the mass of the Higgs boson.",
journal = "Physics Letters B",
title = "A measurement of the Higgs boson mass in the diphoton decay channel",
volume = "805 C",
pages = "135425",
doi = "10.1016/j.physletb.2020.135425"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). A measurement of the Higgs boson mass in the diphoton decay channel.
Physics Letters B, 805 C, 135425. 
https://doi.org/10.1016/j.physletb.2020.135425
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. A measurement of the Higgs boson mass in the diphoton decay channel. Physics Letters B. 2020;805 C:135425
3
11
6
15

Search for supersymmetry in pp collisions at s=13 TeV with 137 fb−1 in final states with a single lepton using the sum of masses of large-radius jets

Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8949
AB  - Results are reported from a search for new physics beyond the standard model in proton-proton collisions in final states with a single lepton; multiple jets, including at least one jet tagged as originating from the hadronization of a bottom quark; and large missing transverse momentum. The search uses a sample of proton-proton collision data at s=13  TeV, corresponding to 137  fb−1, recorded by the CMS experiment at the LHC. The signal region is divided into categories characterized by the total number of jets, the number of bottom quark jets, the missing transverse momentum, and the sum of masses of large-radius jets. The observed event yields in the signal regions are consistent with estimates of standard model backgrounds based on event yields in the control regions. The results are interpreted in the context of simplified models of supersymmetry involving gluino pair production in which each gluino decays into a top quark-antiquark pair and a stable, unobserved neutralino, which generates missing transverse momentum in the event. Scenarios with gluino masses up to about 2150 GeV are excluded at 95% confidence level (or more) for neutralino masses up to 700 GeV. The highest excluded neutralino mass is about 1250 GeV, which holds for gluino masses around 1850 GeV.
T2  - Physical Review D
T1  - Search for supersymmetry in pp collisions at s=13  TeV with 137  fb−1 in final states with a single lepton using the sum of masses of large-radius jets
VL  - 101
SP  - 052010
DO  - 10.1103/PhysRevD.101.052010
ER  - 
@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8949",
abstract = "Results are reported from a search for new physics beyond the standard model in proton-proton collisions in final states with a single lepton; multiple jets, including at least one jet tagged as originating from the hadronization of a bottom quark; and large missing transverse momentum. The search uses a sample of proton-proton collision data at s=13  TeV, corresponding to 137  fb−1, recorded by the CMS experiment at the LHC. The signal region is divided into categories characterized by the total number of jets, the number of bottom quark jets, the missing transverse momentum, and the sum of masses of large-radius jets. The observed event yields in the signal regions are consistent with estimates of standard model backgrounds based on event yields in the control regions. The results are interpreted in the context of simplified models of supersymmetry involving gluino pair production in which each gluino decays into a top quark-antiquark pair and a stable, unobserved neutralino, which generates missing transverse momentum in the event. Scenarios with gluino masses up to about 2150 GeV are excluded at 95% confidence level (or more) for neutralino masses up to 700 GeV. The highest excluded neutralino mass is about 1250 GeV, which holds for gluino masses around 1850 GeV.",
journal = "Physical Review D",
title = "Search for supersymmetry in pp collisions at s=13  TeV with 137  fb−1 in final states with a single lepton using the sum of masses of large-radius jets",
volume = "101",
pages = "052010",
doi = "10.1103/PhysRevD.101.052010"
}
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for supersymmetry in pp collisions at s=13  TeV with 137  fb−1 in final states with a single lepton using the sum of masses of large-radius jets.
Physical Review D, 101, 052010. 
https://doi.org/10.1103/PhysRevD.101.052010
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for supersymmetry in pp collisions at s=13  TeV with 137  fb−1 in final states with a single lepton using the sum of masses of large-radius jets. Physical Review D. 2020;101:052010
1
3
6
6

Correlations between azimuthal anisotropy Fourier harmonics in PbPb collisions at sNN =2.76 TeV in the HYDJET++ model and in the multiphase transport model

Đorđević, Miloš; Milošević, Jovan; Nađđerđ, Laslo; Stojanović, Milan; Wang, F.; Zhu, X.

(2020)

TY  - JOUR
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Nađđerđ, Laslo
AU  - Stojanović, Milan
AU  - Wang, F.
AU  - Zhu, X.
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8478
AB  - Correlations between azimuthal anisotropy Fourier harmonics vn (n=2,3,4) are studied using the events from PbPb collisions at sNN=2.76 TeV generated by the HYDJET++ and multiphase transport (AMPT) models, and compared to the corresponding experimental results obtained by the ATLAS Collaboration. The Fourier harmonics vn are measured over a wide centrality range using the two-particle azimuthal correlation method. The slopes of the v2-v3 correlation from both models are in a good agreement with the ATLAS data. The HYDJET++ model predicts a stronger slope for the v2-v4 and v3-v4 correlations than the ones experimentally measured, while the results from the AMPT model are in a rather good agreement with the experimental results. In contrast to the HYDJET++ predictions, the AMPT model predicts a boomeranglike shape in the structure of the correlations as found in the experimental data. © 2020 American Physical Society.
T2  - Physical Review C
T1  - Correlations between azimuthal anisotropy Fourier harmonics in PbPb collisions at sNN =2.76 TeV in the HYDJET++ model and in the multiphase transport model
VL  - 101
IS  - 1
SP  - 014908
DO  - 10.1103/PhysRevC.101.014908
ER  - 
@article{
author = "Đorđević, Miloš and Milošević, Jovan and Nađđerđ, Laslo and Stojanović, Milan and Wang, F. and Zhu, X.",
year = "2020",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8478",
abstract = "Correlations between azimuthal anisotropy Fourier harmonics vn (n=2,3,4) are studied using the events from PbPb collisions at sNN=2.76 TeV generated by the HYDJET++ and multiphase transport (AMPT) models, and compared to the corresponding experimental results obtained by the ATLAS Collaboration. The Fourier harmonics vn are measured over a wide centrality range using the two-particle azimuthal correlation method. The slopes of the v2-v3 correlation from both models are in a good agreement with the ATLAS data. The HYDJET++ model predicts a stronger slope for the v2-v4 and v3-v4 correlations than the ones experimentally measured, while the results from the AMPT model are in a rather good agreement with the experimental results. In contrast to the HYDJET++ predictions, the AMPT model predicts a boomeranglike shape in the structure of the correlations as found in the experimental data. © 2020 American Physical Society.",
journal = "Physical Review C",
title = "Correlations between azimuthal anisotropy Fourier harmonics in PbPb collisions at sNN =2.76 TeV in the HYDJET++ model and in the multiphase transport model",
volume = "101",
number = "1",
pages = "014908",
doi = "10.1103/PhysRevC.101.014908"
}
Đorđević, M., Milošević, J., Nađđerđ, L., Stojanović, M., Wang, F.,& Zhu, X. (2020). Correlations between azimuthal anisotropy Fourier harmonics in PbPb collisions at sNN =2.76 TeV in the HYDJET++ model and in the multiphase transport model.
Physical Review C, 101(1), 014908. 
https://doi.org/10.1103/PhysRevC.101.014908
Đorđević M, Milošević J, Nađđerđ L, Stojanović M, Wang F, Zhu X. Correlations between azimuthal anisotropy Fourier harmonics in PbPb collisions at sNN =2.76 TeV in the HYDJET++ model and in the multiphase transport model. Physical Review C. 2020;101(1):014908
1

Evidence for WW production from double-parton interactions in proton–proton collisions at √s=13TeV

Sirunyan, A M; Tumasyan, A; Adam, W; Ambrogi, F; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A M
AU  - Tumasyan, A
AU  - Adam, W
AU  - Ambrogi, F
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8575
AB  - A search for WW production from double-parton scattering processes using same-charge electron-muon and dimuon events is reported, based on proton-proton collision data collected at a center-of-mass energy of 13TeV. The analyzed data set corresponds to an integrated luminosity of 77.4fb-1, collected using the CMS detector at the LHC in 2016 and 2017. Multivariate classifiers are used to discriminate between the signal and the dominant background processes. A maximum likelihood fit is performed to extract the signal cross section. This leads to the first evidence for WW production via double-parton scattering, with a significance of 3.9 standard deviations. The measured inclusive cross section is 1.41±0.28(stat)±0.28(syst)pb.
T2  - European Physical Journal C
T1  - Evidence for WW production from double-parton interactions in proton–proton collisions at √s=13TeV
VL  - 80
IS  - 1
DO  - 10.1140/epjc/s10052-019-7541-6
ER  - 
@article{
author = "Sirunyan, A M and Tumasyan, A and Adam, W and Ambrogi, F and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8575",
abstract = "A search for WW production from double-parton scattering processes using same-charge electron-muon and dimuon events is reported, based on proton-proton collision data collected at a center-of-mass energy of 13TeV. The analyzed data set corresponds to an integrated luminosity of 77.4fb-1, collected using the CMS detector at the LHC in 2016 and 2017. Multivariate classifiers are used to discriminate between the signal and the dominant background processes. A maximum likelihood fit is performed to extract the signal cross section. This leads to the first evidence for WW production via double-parton scattering, with a significance of 3.9 standard deviations. The measured inclusive cross section is 1.41±0.28(stat)±0.28(syst)pb.",
journal = "European Physical Journal C",
title = "Evidence for WW production from double-parton interactions in proton–proton collisions at √s=13TeV",
volume = "80",
number = "1",
doi = "10.1140/epjc/s10052-019-7541-6"
}
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Evidence for WW production from double-parton interactions in proton–proton collisions at √s=13TeV.
European Physical Journal C, 80(1). 
https://doi.org/10.1140/epjc/s10052-019-7541-6
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Evidence for WW production from double-parton interactions in proton–proton collisions at √s=13TeV. European Physical Journal C. 2020;80(1)
3
6
8

Search for a charged Higgs boson decaying into top and bottom quarks in events with electrons or muons in proton-proton collisions at √s = 13 TeV

Sirunyan, A M; Tumasyan, A; Adam, W; Ambrogi, F; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2020)

TY  - JOUR
AU  - Sirunyan, A M
AU  - Tumasyan, A
AU  - Adam, W
AU  - Ambrogi, F
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8573
AB  - A search is presented for a charged Higgs boson heavier than the top quark, produced in association with a top quark, or with a top and a bottom quark, and decaying into a top-bottom quark-antiquark pair. The search is performed using proton-proton collision data collected by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. Events are selected by the presence of a single isolated charged lepton (electron or muon) or an opposite-sign dilepton (electron or muon) pair, categorized according to the jet multiplicity and the number of jets identified as originating from b quarks. Multivariate analysis techniques are used to enhance the discrimination between signal and background in each category. The data are compatible with the standard model, and 95% confidence level upper limits of 9.6–0.01 pb are set on the charged Higgs boson production cross section times branching fraction to a top-bottom quark-antiquark pair, for charged Higgs boson mass hypotheses ranging from 200 GeV to 3 TeV. The upper limits are interpreted in different minimal supersymmetric extensions of the standard model. [Figure not available: see fulltext.]
T2  - Journal of High Energy Physics
T1  - Search for a charged Higgs boson decaying into top and bottom quarks in events with electrons or muons in proton-proton collisions at √s = 13 TeV
VL  - 2020
IS  - 1
DO  - 10.1007/JHEP01(2020)096
ER  - 
@article{
author = "Sirunyan, A M and Tumasyan, A and Adam, W and Ambrogi, F and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8573",
abstract = "A search is presented for a charged Higgs boson heavier than the top quark, produced in association with a top quark, or with a top and a bottom quark, and decaying into a top-bottom quark-antiquark pair. The search is performed using proton-proton collision data collected by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. Events are selected by the presence of a single isolated charged lepton (electron or muon) or an opposite-sign dilepton (electron or muon) pair, categorized according to the jet multiplicity and the number of jets identified as originating from b quarks. Multivariate analysis techniques are used to enhance the discrimination between signal and background in each category. The data are compatible with the standard model, and 95% confidence level upper limits of 9.6–0.01 pb are set on the charged Higgs boson production cross section times branching fraction to a top-bottom quark-antiquark pair, for charged Higgs boson mass hypotheses ranging from 200 GeV to 3 TeV. The upper limits are interpreted in different minimal supersymmetric extensions of the standard model. [Figure not available: see fulltext.]",
journal = "Journal of High Energy Physics",
title = "Search for a charged Higgs boson decaying into top and bottom quarks in events with electrons or muons in proton-proton collisions at √s = 13 TeV",
volume = "2020",
number = "1",
doi = "10.1007/JHEP01(2020)096"
}
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2020). Search for a charged Higgs boson decaying into top and bottom quarks in events with electrons or muons in proton-proton collisions at √s = 13 TeV.
Journal of High Energy Physics, 2020(1). 
https://doi.org/10.1007/JHEP01(2020)096
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for a charged Higgs boson decaying into top and bottom quarks in events with electrons or muons in proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics. 2020;2020(1)
12
10
19

Study of the B +→ J / ψ Λ ¯ p decay in proton-proton collisions at √s = 8 TeV

Sirunyan, A.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Adžić, Petar; Ćirković, Predrag; Devetak, Damir; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Stojanović, Milan

(2019)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8765
AB  - A study of the B +→ J / ψ Λ ¯ p decay using proton-proton collision data collected at s = 8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6 fb−1, is presented. The ratio of branching fractions B(B+→J/ψΛ¯p)/B(B+→J/ψK∗(892)+) is measured to be (1.054 ± 0.057(stat) ± 0.035(syst) ± 0.011(B))%, where the last uncertainty reflects the uncertainties in the world-average branching fractions of Λ ¯ and K*(892) + decays to reconstructed final states. The invariant mass distributions of the J / ψ Λ ¯ , J/ψp, and Λ ¯ p systems produced in the B +→ J / ψ Λ¯ p decay are investigated and found to be inconsistent with the pure phase space hypothesis. The analysis is extended by using a model-independent angular amplitude analysis, which shows that the observed invariant mass distributions are consistent with the contributions from excited kaons decaying to the Λ ¯ p system.
T2  - Journal of High Energy Physics
T1  - Study of the B +→ J / ψ Λ ¯ p decay in proton-proton collisions at √s = 8 TeV
VL  - 2019
IS  - 12
SP  - 1
EP  - 38
DO  - 10.1007/JHEP12(2019)100
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8765",
abstract = "A study of the B +→ J / ψ Λ ¯ p decay using proton-proton collision data collected at s = 8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6 fb−1, is presented. The ratio of branching fractions B(B+→J/ψΛ¯p)/B(B+→J/ψK∗(892)+) is measured to be (1.054 ± 0.057(stat) ± 0.035(syst) ± 0.011(B))%, where the last uncertainty reflects the uncertainties in the world-average branching fractions of Λ ¯ and K*(892) + decays to reconstructed final states. The invariant mass distributions of the J / ψ Λ ¯ , J/ψp, and Λ ¯ p systems produced in the B +→ J / ψ Λ¯ p decay are investigated and found to be inconsistent with the pure phase space hypothesis. The analysis is extended by using a model-independent angular amplitude analysis, which shows that the observed invariant mass distributions are consistent with the contributions from excited kaons decaying to the Λ ¯ p system.",
journal = "Journal of High Energy Physics",
title = "Study of the B +→ J / ψ Λ ¯ p decay in proton-proton collisions at √s = 8 TeV",
volume = "2019",
number = "12",
pages = "1-38",
doi = "10.1007/JHEP12(2019)100"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M. (2019). Study of the B +→ J / ψ Λ ¯ p decay in proton-proton collisions at √s = 8 TeV.
Journal of High Energy Physics, 2019(12), 1-38. 
https://doi.org/10.1007/JHEP12(2019)100
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Study of the B +→ J / ψ Λ ¯ p decay in proton-proton collisions at √s = 8 TeV. Journal of High Energy Physics. 2019;2019(12):1-38
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