Rekovic, V.

 Authority Key Name Variants 1efe1e89-0f91-4214-9e11-dff600baedae Rekovic, V. (645)

Author's Bibliography

Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV

(2018)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Asilar, E.
AU  - Bergauer, T.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9109
AB  - Events with no charged particles produced between the two leading jets are studied in proton-proton collisions at $$\sqrt{s}=7$$ s=7  $$\,\text {TeV}$$ TeV . The jets were required to have transverse momentum $$p_{\mathrm {T}} ^{\text {jet}}>40$$ pTjet>40  $$\,\text {GeV}$$ GeV  and pseudorapidity $$1.5<|\eta ^{\text {jet}} |<4.7$$ 1.5<|ηjet|<4.7 , and to have values of $$\eta ^{\text {jet}}$$ ηjet  with opposite signs. The data used for this study were collected with the CMS detector during low-luminosity running at the LHC, and correspond to an integrated luminosity of 8$$\,\text {pb}^{-1}$$ pb-1 . Events with no charged particles with $$p_{\mathrm {T}} >0.2$$ pT>0.2  $$\,\text {GeV}$$ GeV  in the interval $$-1<\eta < 1$$ -1<η<1  between the jets are observed in excess of calculations that assume no color-singlet exchange. The fraction of events with such a rapidity gap, amounting to 0.5–1% of the selected dijet sample, is measured as a function of the $$p_{\mathrm {T}}$$ pT  of the second-leading jet and of the rapidity separation between the jets. The data are compared to previous measurements at the Tevatron, and to perturbative quantum chromodynamics calculations based on the Balitsky–Fadin–Kuraev–Lipatov evolution equations, including different models of the non-perturbative gap survival probability.
T2  - European Physical Journal C
T1  - Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV
VL  - 78
IS  - 3
SP  - 242
DO  - 10.1140/epjc/s10052-018-5691-6
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Asilar, E. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V.",
year = "2018",
abstract = "Events with no charged particles produced between the two leading jets are studied in proton-proton collisions at $$\sqrt{s}=7$$ s=7  $$\,\text {TeV}$$ TeV . The jets were required to have transverse momentum $$p_{\mathrm {T}} ^{\text {jet}}>40$$ pTjet>40  $$\,\text {GeV}$$ GeV  and pseudorapidity $$1.5<|\eta ^{\text {jet}} |<4.7$$ 1.5<|ηjet|<4.7 , and to have values of $$\eta ^{\text {jet}}$$ ηjet  with opposite signs. The data used for this study were collected with the CMS detector during low-luminosity running at the LHC, and correspond to an integrated luminosity of 8$$\,\text {pb}^{-1}$$ pb-1 . Events with no charged particles with $$p_{\mathrm {T}} >0.2$$ pT>0.2  $$\,\text {GeV}$$ GeV  in the interval $$-1<\eta < 1$$ -1<η<1  between the jets are observed in excess of calculations that assume no color-singlet exchange. The fraction of events with such a rapidity gap, amounting to 0.5–1% of the selected dijet sample, is measured as a function of the $$p_{\mathrm {T}}$$ pT  of the second-leading jet and of the rapidity separation between the jets. The data are compared to previous measurements at the Tevatron, and to perturbative quantum chromodynamics calculations based on the Balitsky–Fadin–Kuraev–Lipatov evolution equations, including different models of the non-perturbative gap survival probability.",
journal = "European Physical Journal C",
title = "Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV",
volume = "78",
number = "3",
pages = "242",
doi = "10.1140/epjc/s10052-018-5691-6"
}
Sirunyan, A., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J.,& Rekovic, V.. (2018). Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV. in European Physical Journal C, 78(3), 242.
https://doi.org/10.1140/epjc/s10052-018-5691-6
Sirunyan A, Tumasyan A, Adam W, Asilar E, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V. Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV. in European Physical Journal C. 2018;78(3):242.
doi:10.1140/epjc/s10052-018-5691-6 .
Sirunyan, A., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., "Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV" in European Physical Journal C, 78, no. 3 (2018):242,
https://doi.org/10.1140/epjc/s10052-018-5691-6 . .
 1 5 5 4

Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at root s=13 TeV

(2018)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1924
AB  - A search for narrow vector resonances decaying into quark-antiquark pairs is presented. The analysis is based on data collected in proton-proton collisions at root s = 13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb(-1). The hypothetical resonance is produced with sufficiently high transverse momentum that its decay products are merged into a single jet with two-prong substructure. A signal would be identified as a peak over a smoothly falling background in the distribution of the invariant mass of the jet, using novel jet substructure techniques. No evidence for such a resonance is observed within the mass range of 50-300 GeV. Upper limits at 95% confidence level are set on the production cross section, and presented in a mass-coupling parameter space. The limits further constrain simplified models of dark matter production involving a mediator interacting between quarks and dark matter particles through a vector or axial-vector current. In the framework of these models, the results are the most sensitive to date, extending for the first time the search region to masses below 100 GeV.
T2  - Journal of High Energy Physics
T1  - Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at root s=13 TeV
IS  - 1
DO  - 10.1007/JHEP01(2018)097
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2018",
abstract = "A search for narrow vector resonances decaying into quark-antiquark pairs is presented. The analysis is based on data collected in proton-proton collisions at root s = 13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb(-1). The hypothetical resonance is produced with sufficiently high transverse momentum that its decay products are merged into a single jet with two-prong substructure. A signal would be identified as a peak over a smoothly falling background in the distribution of the invariant mass of the jet, using novel jet substructure techniques. No evidence for such a resonance is observed within the mass range of 50-300 GeV. Upper limits at 95% confidence level are set on the production cross section, and presented in a mass-coupling parameter space. The limits further constrain simplified models of dark matter production involving a mediator interacting between quarks and dark matter particles through a vector or axial-vector current. In the framework of these models, the results are the most sensitive to date, extending for the first time the search region to masses below 100 GeV.",
journal = "Journal of High Energy Physics",
title = "Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at root s=13 TeV",
number = "1",
doi = "10.1007/JHEP01(2018)097"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2018). Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at root s=13 TeV. in Journal of High Energy Physics(1).
https://doi.org/10.1007/JHEP01(2018)097
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at root s=13 TeV. in Journal of High Energy Physics. 2018;(1).
doi:10.1007/JHEP01(2018)097 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at root s=13 TeV" in Journal of High Energy Physics, no. 1 (2018),
https://doi.org/10.1007/JHEP01(2018)097 . .
 9 33 20 53

Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks

(2018)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1930
AB  - A search for supersymmetry is presented based on proton-proton collision events containing identified hadronically decaying top quarks, no leptons, and an imbalance p(T)(miss) in transverse momentum. The data were collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV, and correspond to an integrated luminosity of 35.9 fb(-1). Search regions are defined in terms of the multiplicity of bottom quark jet and top quark candidates, the p(T)(miss) , the scalar sum of jet transverse momenta, and themT2 mass variable. No statistically significant excess of events is observed relative to the expectation from the standard model. Lower limits on the masses of supersymmetric particles are determined at 95% confidence level in the context of simplified models with top quark production. For a model with direct top squark pair production followed by the decay of each top squark to a top quark and a neutralino, top squark masses up to 1020 GeVand neutralino masses up to 430 GeVare excluded. For amodel with pair production of gluinos followed by the decay of each gluino to a top quark-antiquark pair and a neutralino, gluino masses up to 2040 GeVand neutralino masses up to 1150 GeVare excluded. These limits extend previous results.
T2  - Physical Review D
T1  - Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks
VL  - 97
IS  - 1
DO  - 10.1103/PhysRevD.97.012007
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2018",
abstract = "A search for supersymmetry is presented based on proton-proton collision events containing identified hadronically decaying top quarks, no leptons, and an imbalance p(T)(miss) in transverse momentum. The data were collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV, and correspond to an integrated luminosity of 35.9 fb(-1). Search regions are defined in terms of the multiplicity of bottom quark jet and top quark candidates, the p(T)(miss) , the scalar sum of jet transverse momenta, and themT2 mass variable. No statistically significant excess of events is observed relative to the expectation from the standard model. Lower limits on the masses of supersymmetric particles are determined at 95% confidence level in the context of simplified models with top quark production. For a model with direct top squark pair production followed by the decay of each top squark to a top quark and a neutralino, top squark masses up to 1020 GeVand neutralino masses up to 430 GeVare excluded. For amodel with pair production of gluinos followed by the decay of each gluino to a top quark-antiquark pair and a neutralino, gluino masses up to 2040 GeVand neutralino masses up to 1150 GeVare excluded. These limits extend previous results.",
journal = "Physical Review D",
title = "Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks",
volume = "97",
number = "1",
doi = "10.1103/PhysRevD.97.012007"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2018). Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks. in Physical Review D, 97(1).
https://doi.org/10.1103/PhysRevD.97.012007
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks. in Physical Review D. 2018;97(1).
doi:10.1103/PhysRevD.97.012007 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks" in Physical Review D, 97, no. 1 (2018),
https://doi.org/10.1103/PhysRevD.97.012007 . .
 4 15 29 31

Search for heavy resonances decaying to a top quark and a bottom quark in the lepton plus jets final state in proton-proton collisions at 13 TeV

(2018)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1941
AB  - A search is presented for narrow heavy resonances decaying to a top quark and a bottom quark using data collected by the CMS experiment at root s= 13 TeV in 2016. The data set analyzed corresponds to an integrated luminosity of 35.9fb(-1). Final states that include a single lepton (e, mu), multiple jets, and missing transverse momentum are analyzed. No evidence is found for the production of a W boson, and the production of right-handed W bosons is excluded at 95% confidence level for masses up to 3.6 TeV depending on the scenario considered. Exclusion limits for W bosons are also presented as a function of their coupling strength to left- and right-handed fermions. These limits on a W boson decaying via a top and a bottom quark are the most stringent published to date. (c) 2017 The Author. Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Search for heavy resonances decaying to a top quark and a bottom quark in the lepton plus jets final state in proton-proton collisions at 13 TeV
VL  - 777
SP  - 39
EP  - 63
DO  - 10.1016/j.physletb.2017.12.006
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2018",
abstract = "A search is presented for narrow heavy resonances decaying to a top quark and a bottom quark using data collected by the CMS experiment at root s= 13 TeV in 2016. The data set analyzed corresponds to an integrated luminosity of 35.9fb(-1). Final states that include a single lepton (e, mu), multiple jets, and missing transverse momentum are analyzed. No evidence is found for the production of a W boson, and the production of right-handed W bosons is excluded at 95% confidence level for masses up to 3.6 TeV depending on the scenario considered. Exclusion limits for W bosons are also presented as a function of their coupling strength to left- and right-handed fermions. These limits on a W boson decaying via a top and a bottom quark are the most stringent published to date. (c) 2017 The Author. Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Search for heavy resonances decaying to a top quark and a bottom quark in the lepton plus jets final state in proton-proton collisions at 13 TeV",
volume = "777",
pages = "39-63",
doi = "10.1016/j.physletb.2017.12.006"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2018). Search for heavy resonances decaying to a top quark and a bottom quark in the lepton plus jets final state in proton-proton collisions at 13 TeV. in Physics Letters B, 777, 39-63.
https://doi.org/10.1016/j.physletb.2017.12.006
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for heavy resonances decaying to a top quark and a bottom quark in the lepton plus jets final state in proton-proton collisions at 13 TeV. in Physics Letters B. 2018;777:39-63.
doi:10.1016/j.physletb.2017.12.006 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for heavy resonances decaying to a top quark and a bottom quark in the lepton plus jets final state in proton-proton collisions at 13 TeV" in Physics Letters B, 777 (2018):39-63,
https://doi.org/10.1016/j.physletb.2017.12.006 . .
 2 13 18 20

Search for Higgsino pair production in pp collisions at root s=13 TeV in final states with large missing transverse momentum and two Higgs bosons decaying via H - GT b(b)over bar

(2018)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1950
AB  - Results are reported from a search for new physics in 13 TeV proton-proton collisions in the final state with large missing transverse momentum and two Higgs bosons decaying via H - GT b(b)over bar. The search uses a data sample accumulated by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb(-1). The search is motivated by models based on gauge-mediated supersymmetry breaking, which predict the electroweak production of a pair of Higgsinos, each of which can decay via a cascade process to a Higgs boson and an undetected lightest supersymmetric particle. The observed event yields in the signal regions are consistent with the standard model background expectation obtained from control regions in data. Higgsinos in the mass range 230-770 GeV are excluded at 95% confidence level in the context of a simplified model for the production and decay of approximately degenerate Higgsinos.
T2  - Physical Review D
T1  - Search for Higgsino pair production in pp collisions at root s=13 TeV in final states with large missing transverse momentum and two Higgs bosons decaying via H - GT b(b)over bar
VL  - 97
IS  - 3
DO  - 10.1103/PhysRevD.97.032007
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2018",
abstract = "Results are reported from a search for new physics in 13 TeV proton-proton collisions in the final state with large missing transverse momentum and two Higgs bosons decaying via H - GT b(b)over bar. The search uses a data sample accumulated by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb(-1). The search is motivated by models based on gauge-mediated supersymmetry breaking, which predict the electroweak production of a pair of Higgsinos, each of which can decay via a cascade process to a Higgs boson and an undetected lightest supersymmetric particle. The observed event yields in the signal regions are consistent with the standard model background expectation obtained from control regions in data. Higgsinos in the mass range 230-770 GeV are excluded at 95% confidence level in the context of a simplified model for the production and decay of approximately degenerate Higgsinos.",
journal = "Physical Review D",
title = "Search for Higgsino pair production in pp collisions at root s=13 TeV in final states with large missing transverse momentum and two Higgs bosons decaying via H - GT b(b)over bar",
volume = "97",
number = "3",
doi = "10.1103/PhysRevD.97.032007"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2018). Search for Higgsino pair production in pp collisions at root s=13 TeV in final states with large missing transverse momentum and two Higgs bosons decaying via H - GT b(b)over bar. in Physical Review D, 97(3).
https://doi.org/10.1103/PhysRevD.97.032007
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for Higgsino pair production in pp collisions at root s=13 TeV in final states with large missing transverse momentum and two Higgs bosons decaying via H - GT b(b)over bar. in Physical Review D. 2018;97(3).
doi:10.1103/PhysRevD.97.032007 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for Higgsino pair production in pp collisions at root s=13 TeV in final states with large missing transverse momentum and two Higgs bosons decaying via H - GT b(b)over bar" in Physical Review D, 97, no. 3 (2018),
https://doi.org/10.1103/PhysRevD.97.032007 . .
 3 8 5 15

Pseudorapidity distributions of charged hadrons in proton-lead collisions at root s(NN)=5:02 and 8.16 TeV

(2018)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1920
AB  - The pseudorapidity distributions of charged hadrons in proton-lead collisions at nucleon-nucleon center-of-mass energies root s(NN) = 5.02 and 8.16 TeV are presented. The measurements are based on data samples collected by the CMS experiment at the LHC. The number of primary charged hadrons produced in non-single-diffractive proton-lead collisions is determined in the pseudorapidity range vertical bar eta(lab)vertical bar LT 2.4. The charged-hadron multiplicity distributions are compared to the predictions from theoretical calculations and Monte Carlo event generators. In the center-of-mass pseudorapidity range vertical bar eta(cm)vertical bar LT 0.5, the average charged-hadron multiplicity densities LT dN(ch)/d eta(cm) GT vertical bar(vertical bar eta cm vertical bar) LT 0.5 are 17.1 +/- 0.01 (stat) +/- 0.59 (syst) and 20.10 +/- 0.01 (stat) +/- 0.5(syst) at root s(NN) = 5.02 and 8.16 TeV, respectively. The particle densities per participant nucleon are compared to similar measurements in proton-proton, proton-nucleus, and nucleus-nucleus collisions.
T2  - Journal of High Energy Physics
T1  - Pseudorapidity distributions of charged hadrons in proton-lead collisions at root s(NN)=5:02 and 8.16 TeV
IS  - 1
DO  - 10.1007/JHEP01(2018)045
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2018",
abstract = "The pseudorapidity distributions of charged hadrons in proton-lead collisions at nucleon-nucleon center-of-mass energies root s(NN) = 5.02 and 8.16 TeV are presented. The measurements are based on data samples collected by the CMS experiment at the LHC. The number of primary charged hadrons produced in non-single-diffractive proton-lead collisions is determined in the pseudorapidity range vertical bar eta(lab)vertical bar LT 2.4. The charged-hadron multiplicity distributions are compared to the predictions from theoretical calculations and Monte Carlo event generators. In the center-of-mass pseudorapidity range vertical bar eta(cm)vertical bar LT 0.5, the average charged-hadron multiplicity densities LT dN(ch)/d eta(cm) GT vertical bar(vertical bar eta cm vertical bar) LT 0.5 are 17.1 +/- 0.01 (stat) +/- 0.59 (syst) and 20.10 +/- 0.01 (stat) +/- 0.5(syst) at root s(NN) = 5.02 and 8.16 TeV, respectively. The particle densities per participant nucleon are compared to similar measurements in proton-proton, proton-nucleus, and nucleus-nucleus collisions.",
journal = "Journal of High Energy Physics",
title = "Pseudorapidity distributions of charged hadrons in proton-lead collisions at root s(NN)=5:02 and 8.16 TeV",
number = "1",
doi = "10.1007/JHEP01(2018)045"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2018). Pseudorapidity distributions of charged hadrons in proton-lead collisions at root s(NN)=5:02 and 8.16 TeV. in Journal of High Energy Physics(1).
https://doi.org/10.1007/JHEP01(2018)045
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Pseudorapidity distributions of charged hadrons in proton-lead collisions at root s(NN)=5:02 and 8.16 TeV. in Journal of High Energy Physics. 2018;(1).
doi:10.1007/JHEP01(2018)045 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Pseudorapidity distributions of charged hadrons in proton-lead collisions at root s(NN)=5:02 and 8.16 TeV" in Journal of High Energy Physics, no. 1 (2018),
https://doi.org/10.1007/JHEP01(2018)045 . .
 1 6 8 10

Search for resonant and nonresonant Higgs boson pair production in the b(b)over-barl nu l nu final state in proton-proton collisions at root s=13 TeV

(2018)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1914
AB  - Searches for resonant and nonresonant pair-produced Higgs bosons (HH) decaying respectively into l nu l nu, through either W or Z bosons, and b (b) over bar are presented. The analyses are based on a sample of proton-proton collisions at root s = 13 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 fb(-1). Data and predictions from the standard model are in agreement within uncertainties. For the standard model HH hypothesis, the data exclude at 95% confidence level a product of the production cross section and branching fraction larger than 72 fb, corresponding to 79 times the standard model prediction. Constraints are placed on different scenarios considering anomalous couplings, which could affect the rate and kinematics of HH production. Upper limits at 95% confidence level are set on the production cross section of narrow-width spin-0 and spin-2 particles decaying to Higgs boson pairs, the latter produced with minimal gravity-like coupling.
T2  - Journal of High Energy Physics
T1  - Search for resonant and nonresonant Higgs boson pair production in the b(b)over-barl nu l nu final state in proton-proton collisions at root s=13 TeV
IS  - 1
DO  - 10.1007/JHEP01(2018)054
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2018",
abstract = "Searches for resonant and nonresonant pair-produced Higgs bosons (HH) decaying respectively into l nu l nu, through either W or Z bosons, and b (b) over bar are presented. The analyses are based on a sample of proton-proton collisions at root s = 13 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 fb(-1). Data and predictions from the standard model are in agreement within uncertainties. For the standard model HH hypothesis, the data exclude at 95% confidence level a product of the production cross section and branching fraction larger than 72 fb, corresponding to 79 times the standard model prediction. Constraints are placed on different scenarios considering anomalous couplings, which could affect the rate and kinematics of HH production. Upper limits at 95% confidence level are set on the production cross section of narrow-width spin-0 and spin-2 particles decaying to Higgs boson pairs, the latter produced with minimal gravity-like coupling.",
journal = "Journal of High Energy Physics",
title = "Search for resonant and nonresonant Higgs boson pair production in the b(b)over-barl nu l nu final state in proton-proton collisions at root s=13 TeV",
number = "1",
doi = "10.1007/JHEP01(2018)054"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2018). Search for resonant and nonresonant Higgs boson pair production in the b(b)over-barl nu l nu final state in proton-proton collisions at root s=13 TeV. in Journal of High Energy Physics(1).
https://doi.org/10.1007/JHEP01(2018)054
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for resonant and nonresonant Higgs boson pair production in the b(b)over-barl nu l nu final state in proton-proton collisions at root s=13 TeV. in Journal of High Energy Physics. 2018;(1).
doi:10.1007/JHEP01(2018)054 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for resonant and nonresonant Higgs boson pair production in the b(b)over-barl nu l nu final state in proton-proton collisions at root s=13 TeV" in Journal of High Energy Physics, no. 1 (2018),
https://doi.org/10.1007/JHEP01(2018)054 . .
 11 26 15 50

Measurements of t(t)over-bar cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at root s=13 TeV

(2018)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1907
AB  - The cross sections for the production of t (t) over bar b (b) over bar and t (t) over bar jj events and their ratio sigma(t (t) over bar b (b) over bar)/sigma(t (t) over bar jj) are measured using data corresponding to an integrated luminosity of 2.3 fb(-1) collected in pp collisions at root s = 13 TeV with the CMS detector at the LHC. Events with two leptons (e or mu) and at least four reconstructed jets, including at least two identified as b quark jets, in the final state are selected. In the full phase space, the measured ratio is 0.022 +/- 0.003 (stat) +/- 0.006 (syst), the cross section sigma(t (t) over bar b (b) over bar) bis 4.0 +/- 0.6 (stat)+/- 1.3 (syst) pb and sigma(t (t) over bar jj) is 184 +/- 6 (stat)+/- 33 (syst) pb. The measurements are compared with the standard model expectations obtained from a POWHEG simulation at next-to-leading-order interfaced with PYTHIA. (c) 2017 The Author. Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Measurements of t(t)over-bar cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at root s=13 TeV
VL  - 776
SP  - 355
EP  - 378
DO  - 10.1016/j.physletb.2017.11.043
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2018",
abstract = "The cross sections for the production of t (t) over bar b (b) over bar and t (t) over bar jj events and their ratio sigma(t (t) over bar b (b) over bar)/sigma(t (t) over bar jj) are measured using data corresponding to an integrated luminosity of 2.3 fb(-1) collected in pp collisions at root s = 13 TeV with the CMS detector at the LHC. Events with two leptons (e or mu) and at least four reconstructed jets, including at least two identified as b quark jets, in the final state are selected. In the full phase space, the measured ratio is 0.022 +/- 0.003 (stat) +/- 0.006 (syst), the cross section sigma(t (t) over bar b (b) over bar) bis 4.0 +/- 0.6 (stat)+/- 1.3 (syst) pb and sigma(t (t) over bar jj) is 184 +/- 6 (stat)+/- 33 (syst) pb. The measurements are compared with the standard model expectations obtained from a POWHEG simulation at next-to-leading-order interfaced with PYTHIA. (c) 2017 The Author. Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Measurements of t(t)over-bar cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at root s=13 TeV",
volume = "776",
pages = "355-378",
doi = "10.1016/j.physletb.2017.11.043"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2018). Measurements of t(t)over-bar cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at root s=13 TeV. in Physics Letters B, 776, 355-378.
https://doi.org/10.1016/j.physletb.2017.11.043
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Measurements of t(t)over-bar cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at root s=13 TeV. in Physics Letters B. 2018;776:355-378.
doi:10.1016/j.physletb.2017.11.043 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Measurements of t(t)over-bar cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at root s=13 TeV" in Physics Letters B, 776 (2018):355-378,
https://doi.org/10.1016/j.physletb.2017.11.043 . .
 1 12 23 30

Azimuthal anisotropy of charged particles with transverse momentum up to 100GeV/c in PbPb collisions at root S-NN=5.02 TeV

(2018)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1906
AB  - The Fourier coefficients v(2) and v(3) characterizing the anisotropy of the azimuthal distribution of charged particles produced in PbPb collisions at root S-NN = 5.02 TeV are measured with data collected by the CMS experiment. The measurements cover a broad transverse momentum range, 1 LT p(T) LT 100 GeV/c. The analysis focuses on the p(T) GT 10 GeV/c range, where anisotropic azimuthal distributions should reflect the path-length dependence of parton energy loss in the created medium. Results are presented in several bins of PbPb collision centrality, spanning the 60% most central events. The v(2) coefficient is measured with the scalar product and the multiparticle cumulant methods, which have different sensitivities to initial-state fluctuations. The values from both methods remain positive up to p(T) similar to 60-80 GeV/c, in all examined centrality classes. The v(3) coefficient, only measured with the scalar product method, tends to zero for p(T) greater than or similar to 20 GeV/c. Comparisons between theoretical calculations and data provide new constraints on the path-length dependence of parton energy loss in heavy ion collisions and highlight the importance of the initial-state fluctuations. (C) 2017 The Author. Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Azimuthal anisotropy of charged particles with transverse momentum up to 100GeV/c in PbPb collisions at root S-NN=5.02 TeV
VL  - 776
SP  - 195
EP  - 216
DO  - 10.1016/j.physletb.2017.11.041
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2018",
abstract = "The Fourier coefficients v(2) and v(3) characterizing the anisotropy of the azimuthal distribution of charged particles produced in PbPb collisions at root S-NN = 5.02 TeV are measured with data collected by the CMS experiment. The measurements cover a broad transverse momentum range, 1 LT p(T) LT 100 GeV/c. The analysis focuses on the p(T) GT 10 GeV/c range, where anisotropic azimuthal distributions should reflect the path-length dependence of parton energy loss in the created medium. Results are presented in several bins of PbPb collision centrality, spanning the 60% most central events. The v(2) coefficient is measured with the scalar product and the multiparticle cumulant methods, which have different sensitivities to initial-state fluctuations. The values from both methods remain positive up to p(T) similar to 60-80 GeV/c, in all examined centrality classes. The v(3) coefficient, only measured with the scalar product method, tends to zero for p(T) greater than or similar to 20 GeV/c. Comparisons between theoretical calculations and data provide new constraints on the path-length dependence of parton energy loss in heavy ion collisions and highlight the importance of the initial-state fluctuations. (C) 2017 The Author. Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Azimuthal anisotropy of charged particles with transverse momentum up to 100GeV/c in PbPb collisions at root S-NN=5.02 TeV",
volume = "776",
pages = "195-216",
doi = "10.1016/j.physletb.2017.11.041"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2018). Azimuthal anisotropy of charged particles with transverse momentum up to 100GeV/c in PbPb collisions at root S-NN=5.02 TeV. in Physics Letters B, 776, 195-216.
https://doi.org/10.1016/j.physletb.2017.11.041
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Azimuthal anisotropy of charged particles with transverse momentum up to 100GeV/c in PbPb collisions at root S-NN=5.02 TeV. in Physics Letters B. 2018;776:195-216.
doi:10.1016/j.physletb.2017.11.041 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Azimuthal anisotropy of charged particles with transverse momentum up to 100GeV/c in PbPb collisions at root S-NN=5.02 TeV" in Physics Letters B, 776 (2018):195-216,
https://doi.org/10.1016/j.physletb.2017.11.041 . .
 2 28 34 34

Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at root s = 13 TeV (vol 9, 106, 2017)

(2018)

TY  - GEN
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1921
T2  - Journal of High Energy Physics
T1  - Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at root s = 13 TeV (vol 9, 106, 2017)
IS  - 1
DO  - 10.1007/JHEP01(2018)056
ER  - 
@misc{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2018",
journal = "Journal of High Energy Physics",
title = "Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at root s = 13 TeV (vol 9, 106, 2017)",
number = "1",
doi = "10.1007/JHEP01(2018)056"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2018). Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at root s = 13 TeV (vol 9, 106, 2017). in Journal of High Energy Physics(1).
https://doi.org/10.1007/JHEP01(2018)056
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at root s = 13 TeV (vol 9, 106, 2017). in Journal of High Energy Physics. 2018;(1).
doi:10.1007/JHEP01(2018)056 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at root s = 13 TeV (vol 9, 106, 2017)" in Journal of High Energy Physics, no. 1 (2018),
https://doi.org/10.1007/JHEP01(2018)056 . .
 1

Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1554
AB  - A search for supersymmetry is performed in events with a single electron or muon in proton-proton collisions at a center-of-mass energy of 13 TeV. The data were recorded by the CMS experiment at the LHC and correspond to an integrated luminosity of 2.3 fb-1. Several exclusive search regions are defined based on the number of jets and b-tagged jets, the scalar sum of the jet transverse momenta, and the scalar sum of the missing transverse momentum and the transverse momentum of the lepton. The observed event yields in data are consistent with the expected backgrounds from standard model processes. The results are interpreted using two simplified models of supersymmetric particle spectra, both of which describe gluino pair production. In the first model, each gluino decays via a three-body process to top quarks and a neutralino, which is associated with the observed missing transverse momentum in the event. Gluinos with masses up to 1.6 TeV are excluded for neutralino masses below 600 GeV. In the second model, each gluino decays via a three-body process to two light quarks and a chargino, which subsequently decays to a W boson and a neutralino. The mass of the chargino is taken to be midway between the gluino and neutralino masses. In this model, gluinos with masses below 1.4 TeV are excluded for neutralino masses below 700 GeV.
T2  - Physical Review D
T1  - Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV
VL  - 95
IS  - 1
DO  - 10.1103/PhysRevD.95.012011
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "A search for supersymmetry is performed in events with a single electron or muon in proton-proton collisions at a center-of-mass energy of 13 TeV. The data were recorded by the CMS experiment at the LHC and correspond to an integrated luminosity of 2.3 fb-1. Several exclusive search regions are defined based on the number of jets and b-tagged jets, the scalar sum of the jet transverse momenta, and the scalar sum of the missing transverse momentum and the transverse momentum of the lepton. The observed event yields in data are consistent with the expected backgrounds from standard model processes. The results are interpreted using two simplified models of supersymmetric particle spectra, both of which describe gluino pair production. In the first model, each gluino decays via a three-body process to top quarks and a neutralino, which is associated with the observed missing transverse momentum in the event. Gluinos with masses up to 1.6 TeV are excluded for neutralino masses below 600 GeV. In the second model, each gluino decays via a three-body process to two light quarks and a chargino, which subsequently decays to a W boson and a neutralino. The mass of the chargino is taken to be midway between the gluino and neutralino masses. In this model, gluinos with masses below 1.4 TeV are excluded for neutralino masses below 700 GeV.",
journal = "Physical Review D",
title = "Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV",
volume = "95",
number = "1",
doi = "10.1103/PhysRevD.95.012011"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV. in Physical Review D, 95(1).
https://doi.org/10.1103/PhysRevD.95.012011
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV. in Physical Review D. 2017;95(1).
doi:10.1103/PhysRevD.95.012011 .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV" in Physical Review D, 95, no. 1 (2017),
https://doi.org/10.1103/PhysRevD.95.012011 . .
 3 8 3 10

Search for R-parity violating supersymmetry with displaced vertices in proton-proton collisions at root s=8 TeV

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1553
AB  - Results are reported from a search for R-parity violating supersymmetry in proton-proton collision events collected by the CMS experiment at a center-of-mass energy of root s = 8 TeV. The data sample corresponds to an integrated luminosity of 17.6 fb(-1). This search assumes a minimal flavor violating model in which the lightest supersymmetric particle is a long-lived neutralino or gluino, leading to a signal with jets emanating from displaced vertices. In a sample of events with two displaced vertices, no excess yield above the expectation from standard model processes is observed, and limits are placed on the pair production cross section as a function of mass and lifetime of the neutralino or gluino. At 95% confidence level, the analysis excludes cross sections above approximately 1 fb for neutralinos or gluinos with mass between 400 and 1500 GeV and mean proper decay length between 1 and 30 mm. Gluino masses are excluded below 1 and 1.3 TeV for mean proper decay lengths of 300 mu m and 1 mm, respectively, and below 1.4 TeV for the range 2-30 mm. The results are also applicable to other models in which long-lived particles decay into multijet final states.
T2  - Physical Review D
T1  - Search for R-parity violating supersymmetry with displaced vertices in proton-proton collisions at root s=8 TeV
VL  - 95
IS  - 1
DO  - 10.1103/PhysRevD.95.012009
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "Results are reported from a search for R-parity violating supersymmetry in proton-proton collision events collected by the CMS experiment at a center-of-mass energy of root s = 8 TeV. The data sample corresponds to an integrated luminosity of 17.6 fb(-1). This search assumes a minimal flavor violating model in which the lightest supersymmetric particle is a long-lived neutralino or gluino, leading to a signal with jets emanating from displaced vertices. In a sample of events with two displaced vertices, no excess yield above the expectation from standard model processes is observed, and limits are placed on the pair production cross section as a function of mass and lifetime of the neutralino or gluino. At 95% confidence level, the analysis excludes cross sections above approximately 1 fb for neutralinos or gluinos with mass between 400 and 1500 GeV and mean proper decay length between 1 and 30 mm. Gluino masses are excluded below 1 and 1.3 TeV for mean proper decay lengths of 300 mu m and 1 mm, respectively, and below 1.4 TeV for the range 2-30 mm. The results are also applicable to other models in which long-lived particles decay into multijet final states.",
journal = "Physical Review D",
title = "Search for R-parity violating supersymmetry with displaced vertices in proton-proton collisions at root s=8 TeV",
volume = "95",
number = "1",
doi = "10.1103/PhysRevD.95.012009"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Search for R-parity violating supersymmetry with displaced vertices in proton-proton collisions at root s=8 TeV. in Physical Review D, 95(1).
https://doi.org/10.1103/PhysRevD.95.012009
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for R-parity violating supersymmetry with displaced vertices in proton-proton collisions at root s=8 TeV. in Physical Review D. 2017;95(1).
doi:10.1103/PhysRevD.95.012009 .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for R-parity violating supersymmetry with displaced vertices in proton-proton collisions at root s=8 TeV" in Physical Review D, 95, no. 1 (2017),
https://doi.org/10.1103/PhysRevD.95.012009 . .
 2 10 3 13

Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1549
AB  - A search for heavy resonances decaying to a Higgs boson and a vector boson is presented. The analysis is performed using data samples collected in 2015 by the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13TeV, corresponding to integrated luminosities of 2.2-2.5 fb(-1). The search is performed in channels in which the vector boson decays into leptonic final states ( Z - GT nu nu., W - GT l nu, and Z - GT ll, with l = e, mu), while the Higgs boson decays to collimated b quark pairs detected as a single massive jet. The discriminating power of a jet mass requirement and a b jet tagging algorithm are exploited to suppress the standard model backgrounds. The event yields observed in data are consistent with the background expectation. In the context of a theoretical model with a heavy vector triplet, a resonance with mass less than 2TeV is excluded at 95% confidence level. The results are also interpreted in terms of limits on the parameters of the model, improving on the reach of previous searches. (C) 2017 The Author. Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks
VL  - 768
SP  - 137
EP  - 162
DO  - 10.1016/j.physletb.2017.02.040
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "A search for heavy resonances decaying to a Higgs boson and a vector boson is presented. The analysis is performed using data samples collected in 2015 by the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13TeV, corresponding to integrated luminosities of 2.2-2.5 fb(-1). The search is performed in channels in which the vector boson decays into leptonic final states ( Z - GT nu nu., W - GT l nu, and Z - GT ll, with l = e, mu), while the Higgs boson decays to collimated b quark pairs detected as a single massive jet. The discriminating power of a jet mass requirement and a b jet tagging algorithm are exploited to suppress the standard model backgrounds. The event yields observed in data are consistent with the background expectation. In the context of a theoretical model with a heavy vector triplet, a resonance with mass less than 2TeV is excluded at 95% confidence level. The results are also interpreted in terms of limits on the parameters of the model, improving on the reach of previous searches. (C) 2017 The Author. Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks",
volume = "768",
pages = "137-162",
doi = "10.1016/j.physletb.2017.02.040"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks. in Physics Letters B, 768, 137-162.
https://doi.org/10.1016/j.physletb.2017.02.040
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks. in Physics Letters B. 2017;768:137-162.
doi:10.1016/j.physletb.2017.02.040 .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks" in Physics Letters B, 768 (2017):137-162,
https://doi.org/10.1016/j.physletb.2017.02.040 . .
 3 14 27 24

Measurement of the WZ production cross section in pp collisions at root s=7 and 8 TeV and search for anomalous triple gauge couplings at root s=8 TeV

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1515
AB  - The WZ production cross section is measured by the CMS experiment at the CERN LHC in proton proton collision data samples corresponding to integrated luminosities of 4.9 fb(-1) collected at root s = 7 TeV, and 19.6fb(-1) at root s = 8 TeV. The measurements are performed using the fully-leptonic WZ decay modes with electrons and muons in the final state. The measured cross sections for 71 LT m(Z) LT 111 GeV are sigma (pp - GT WZ; root s = 7 TeV) = 20.14 +/- 1.32 (stat)+/- 0.38 (theo)+/- 1.06 (exp)+/- 0.44 (lumi) pb and sigma (pp - GT WZ; root s = 8 TeV) = 24.09 +/- 0.87 (stat) 0.80 (theo) +/- 1.40 (exp) +/- 0.63 (lumi) pb. Differential cross sections with respect to the Z boson p(T), the leading jet p(T), and the number of jets are obtained using the root s = 8 TeV data. The results are consistent with standard model predictions and constraints on anomalous triple gauge couplings are obtained.
T2  - European Physical Journal C. Particles and Fields
T1  - Measurement of the WZ production cross section in pp collisions at root s=7 and 8 TeV and search for anomalous triple gauge couplings at root s=8 TeV
VL  - 77
IS  - 4
DO  - 10.1140/epjc/s10052-017-4730-z
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "The WZ production cross section is measured by the CMS experiment at the CERN LHC in proton proton collision data samples corresponding to integrated luminosities of 4.9 fb(-1) collected at root s = 7 TeV, and 19.6fb(-1) at root s = 8 TeV. The measurements are performed using the fully-leptonic WZ decay modes with electrons and muons in the final state. The measured cross sections for 71 LT m(Z) LT 111 GeV are sigma (pp - GT WZ; root s = 7 TeV) = 20.14 +/- 1.32 (stat)+/- 0.38 (theo)+/- 1.06 (exp)+/- 0.44 (lumi) pb and sigma (pp - GT WZ; root s = 8 TeV) = 24.09 +/- 0.87 (stat) 0.80 (theo) +/- 1.40 (exp) +/- 0.63 (lumi) pb. Differential cross sections with respect to the Z boson p(T), the leading jet p(T), and the number of jets are obtained using the root s = 8 TeV data. The results are consistent with standard model predictions and constraints on anomalous triple gauge couplings are obtained.",
journal = "European Physical Journal C. Particles and Fields",
title = "Measurement of the WZ production cross section in pp collisions at root s=7 and 8 TeV and search for anomalous triple gauge couplings at root s=8 TeV",
volume = "77",
number = "4",
doi = "10.1140/epjc/s10052-017-4730-z"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Measurement of the WZ production cross section in pp collisions at root s=7 and 8 TeV and search for anomalous triple gauge couplings at root s=8 TeV. in European Physical Journal C. Particles and Fields, 77(4).
https://doi.org/10.1140/epjc/s10052-017-4730-z
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Measurement of the WZ production cross section in pp collisions at root s=7 and 8 TeV and search for anomalous triple gauge couplings at root s=8 TeV. in European Physical Journal C. Particles and Fields. 2017;77(4).
doi:10.1140/epjc/s10052-017-4730-z .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Measurement of the WZ production cross section in pp collisions at root s=7 and 8 TeV and search for anomalous triple gauge couplings at root s=8 TeV" in European Physical Journal C. Particles and Fields, 77, no. 4 (2017),
https://doi.org/10.1140/epjc/s10052-017-4730-z . .
 1 21 32 32

Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1490
AB  - A search for the resonant production of high-mass photon pairs is presented. The search focuses on spin-0 and spin-2 resonances with masses between 0.5 and 4.5 TeV, and with widths, relative to the mass, between 1.4 x 10(-4) and 5.6 x 10(-2). The data sample corresponds to an integrated luminosity of 12.9 fb(-1) of proton-proton collisions collected with the CMS detector in 2016 at a center-of-mass energy of 13 TeV. No significant excess is observed relative to the standard model expectation. The results of the search are combined statistically with those previously obtained in 2012 and 2015 at root s = 8 and 13 TeV, respectively, corresponding to integrated luminosities of 19.7 and 3.3 fb(-1), to derive exclusion limits on scalar resonances produced through gluon-gluon fusion, and on Randall-Sundrum gravitons. The lower mass limits for Randall-Sundrum gravitons range from 1.95 to 4.45 TeV for coupling parameters between 0.01 and 0.2. These are the most stringent limits on Randall-Sundrum graviton production to date. (C) 2017 The Author. Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search
VL  - 767
SP  - 147
EP  - 170
DO  - 10.1016/j.physletb.2017.01.027
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "A search for the resonant production of high-mass photon pairs is presented. The search focuses on spin-0 and spin-2 resonances with masses between 0.5 and 4.5 TeV, and with widths, relative to the mass, between 1.4 x 10(-4) and 5.6 x 10(-2). The data sample corresponds to an integrated luminosity of 12.9 fb(-1) of proton-proton collisions collected with the CMS detector in 2016 at a center-of-mass energy of 13 TeV. No significant excess is observed relative to the standard model expectation. The results of the search are combined statistically with those previously obtained in 2012 and 2015 at root s = 8 and 13 TeV, respectively, corresponding to integrated luminosities of 19.7 and 3.3 fb(-1), to derive exclusion limits on scalar resonances produced through gluon-gluon fusion, and on Randall-Sundrum gravitons. The lower mass limits for Randall-Sundrum gravitons range from 1.95 to 4.45 TeV for coupling parameters between 0.01 and 0.2. These are the most stringent limits on Randall-Sundrum graviton production to date. (C) 2017 The Author. Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search",
volume = "767",
pages = "147-170",
doi = "10.1016/j.physletb.2017.01.027"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search. in Physics Letters B, 767, 147-170.
https://doi.org/10.1016/j.physletb.2017.01.027
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search. in Physics Letters B. 2017;767:147-170.
doi:10.1016/j.physletb.2017.01.027 .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search" in Physics Letters B, 767 (2017):147-170,
https://doi.org/10.1016/j.physletb.2017.01.027 . .
 3 58 72 81

Search for leptophobic Z bosons decaying into four-lepton final states in proton-proton collisions at root s=8 TeV

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1365
AB  - A search for heavy narrow resonances decaying into four-lepton final states has been performed using proton-proton collision data at root s= 8 TeVcollected by the CMS experiment, corresponding to an integrated luminosity of 19.7fb(-1). No excess of events over the standard model background expectation is observed. Upper limits for a benchmark model on the product of cross section and branching fraction for the production of these heavy narrow resonances are presented. The limit excludes leptophobic Z bosons with masses below 2.5 TeV within the benchmark model. This is the first result to constrain a leptophobic Z resonance in the four-lepton channel. (C) 2017 The Author(s). Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Search for leptophobic Z bosons decaying into four-lepton final states in proton-proton collisions at root s=8 TeV
VL  - 773
SP  - 563
EP  - 584
DO  - 10.1016/j.physletb.2017.08.069
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "A search for heavy narrow resonances decaying into four-lepton final states has been performed using proton-proton collision data at root s= 8 TeVcollected by the CMS experiment, corresponding to an integrated luminosity of 19.7fb(-1). No excess of events over the standard model background expectation is observed. Upper limits for a benchmark model on the product of cross section and branching fraction for the production of these heavy narrow resonances are presented. The limit excludes leptophobic Z bosons with masses below 2.5 TeV within the benchmark model. This is the first result to constrain a leptophobic Z resonance in the four-lepton channel. (C) 2017 The Author(s). Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Search for leptophobic Z bosons decaying into four-lepton final states in proton-proton collisions at root s=8 TeV",
volume = "773",
pages = "563-584",
doi = "10.1016/j.physletb.2017.08.069"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Search for leptophobic Z bosons decaying into four-lepton final states in proton-proton collisions at root s=8 TeV. in Physics Letters B, 773, 563-584.
https://doi.org/10.1016/j.physletb.2017.08.069
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for leptophobic Z bosons decaying into four-lepton final states in proton-proton collisions at root s=8 TeV. in Physics Letters B. 2017;773:563-584.
doi:10.1016/j.physletb.2017.08.069 .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for leptophobic Z bosons decaying into four-lepton final states in proton-proton collisions at root s=8 TeV" in Physics Letters B, 773 (2017):563-584,
https://doi.org/10.1016/j.physletb.2017.08.069 . .
 3 6 5 6

Observation of the decay B+ - GT psi(2S)phi(1020)K+ in pp collisions at root s=8 TeV

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1342
AB  - The decay B+ - GT psi(2S) phi(1020) K+ is observed for the first time using data collected from pp collisions at root S = 8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6 fb(-1). The branching fraction of this decay is measured, using the mode B+ - GT psi(2S) K+ as normalization, to be (4.0 +/- 0.4 (stat)+/- 0.6 (syst)+/- 0.2 (B)) x 10(-6), where the third uncertainty is from the measured branching fraction of the normalization channel. (C) 2016 The Author(s). Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Observation of the decay B+ - GT psi(2S)phi(1020)K+ in pp collisions at root s=8 TeV
VL  - 764
SP  - 66
EP  - 86
DO  - 10.1016/j.physletb.2016.11.001
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "The decay B+ - GT psi(2S) phi(1020) K+ is observed for the first time using data collected from pp collisions at root S = 8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6 fb(-1). The branching fraction of this decay is measured, using the mode B+ - GT psi(2S) K+ as normalization, to be (4.0 +/- 0.4 (stat)+/- 0.6 (syst)+/- 0.2 (B)) x 10(-6), where the third uncertainty is from the measured branching fraction of the normalization channel. (C) 2016 The Author(s). Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Observation of the decay B+ - GT psi(2S)phi(1020)K+ in pp collisions at root s=8 TeV",
volume = "764",
pages = "66-86",
doi = "10.1016/j.physletb.2016.11.001"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Observation of the decay B+ - GT psi(2S)phi(1020)K+ in pp collisions at root s=8 TeV. in Physics Letters B, 764, 66-86.
https://doi.org/10.1016/j.physletb.2016.11.001
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Observation of the decay B+ - GT psi(2S)phi(1020)K+ in pp collisions at root s=8 TeV. in Physics Letters B. 2017;764:66-86.
doi:10.1016/j.physletb.2016.11.001 .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Observation of the decay B+ - GT psi(2S)phi(1020)K+ in pp collisions at root s=8 TeV" in Physics Letters B, 764 (2017):66-86,
https://doi.org/10.1016/j.physletb.2016.11.001 . .
 3 2 4 2

Measurement of the triple-differential dijet cross section in proton-proton collisions at root s=8 TeV and constraints on parton distribution functions

(2017)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1818
AB  - A measurement is presented of the triple-differential dijet cross section at a centre-of-mass energy of 8 TeV using 19.7 fb(-1) of data collected with the CMS detector in proton-proton collisions at the LHC. The cross section is measured as a function of the average transverse momentum, half the rapidity separation, and the boost of the two leading jets in the event. The cross section is corrected for detector effects and compared to calculations in perturbative quantum chromodynamics at next-to-leading order accuracy, complemented with electroweak and nonperturbative corrections. New constraints on parton distribution functions are obtained and the inferred value of the strong coupling constant is alpha(S)(M-Z) = 0.1199 +/- 0.0015 (exp)(-0.0020)(+0.0031) (theo), where M-Z is the mass of the Z boson.
T2  - European Physical Journal C. Particles and Fields
T1  - Measurement of the triple-differential dijet cross section in proton-proton collisions at root s=8 TeV and constraints on parton distribution functions
VL  - 77
IS  - 11
DO  - 10.1140/epjc/s10052-017-5286-7
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "A measurement is presented of the triple-differential dijet cross section at a centre-of-mass energy of 8 TeV using 19.7 fb(-1) of data collected with the CMS detector in proton-proton collisions at the LHC. The cross section is measured as a function of the average transverse momentum, half the rapidity separation, and the boost of the two leading jets in the event. The cross section is corrected for detector effects and compared to calculations in perturbative quantum chromodynamics at next-to-leading order accuracy, complemented with electroweak and nonperturbative corrections. New constraints on parton distribution functions are obtained and the inferred value of the strong coupling constant is alpha(S)(M-Z) = 0.1199 +/- 0.0015 (exp)(-0.0020)(+0.0031) (theo), where M-Z is the mass of the Z boson.",
journal = "European Physical Journal C. Particles and Fields",
title = "Measurement of the triple-differential dijet cross section in proton-proton collisions at root s=8 TeV and constraints on parton distribution functions",
volume = "77",
number = "11",
doi = "10.1140/epjc/s10052-017-5286-7"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Measurement of the triple-differential dijet cross section in proton-proton collisions at root s=8 TeV and constraints on parton distribution functions. in European Physical Journal C. Particles and Fields, 77(11).
https://doi.org/10.1140/epjc/s10052-017-5286-7
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Measurement of the triple-differential dijet cross section in proton-proton collisions at root s=8 TeV and constraints on parton distribution functions. in European Physical Journal C. Particles and Fields. 2017;77(11).
doi:10.1140/epjc/s10052-017-5286-7 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Measurement of the triple-differential dijet cross section in proton-proton collisions at root s=8 TeV and constraints on parton distribution functions" in European Physical Journal C. Particles and Fields, 77, no. 11 (2017),
https://doi.org/10.1140/epjc/s10052-017-5286-7 . .
 2 6 13 22

Search for new phenomena with multiple charged leptons in proton-proton collisions at root s=13TeV

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1750
AB  - Results are reported from a search for physics beyond the standard model in final states with at least three charged leptons, in any combination of electrons or muons. The data sample corresponds to an integrated luminosity of 2.3 fb(-1) of proton-proton collisions at root s = 13 TeV, recorded by the CMS experiment at the LHC in 2015. Two jets are required in each event, providing good sensitivity to strong production of gluinos and squarks. The search regions, sensitive to a range of different new physics scenarios, are defined using the number of jets tagged as originating from bottom quarks, the sum of the magnitudes of the transverse momenta of the jets, the imbalance in the overall transverse momentum in the event, and the invariant mass of opposite-sign, same-flavor lepton pairs. The event yields observed in data are consistent with the expected background contributions from standard model processes. These results are used to derive limits in terms of R-parity conserving simplified models of supersymmetry that describe strong production of gluinos and squarks. Model-independent limits are presented to facilitate the reinterpretation of the results in a broad range of scenarios for physics beyond the standard model.
T2  - European Physical Journal C. Particles and Fields
T1  - Search for new phenomena with multiple charged leptons in proton-proton collisions at root s=13TeV
VL  - 77
IS  - 9
DO  - 10.1140/epjc/s10052-017-5182-1
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "Results are reported from a search for physics beyond the standard model in final states with at least three charged leptons, in any combination of electrons or muons. The data sample corresponds to an integrated luminosity of 2.3 fb(-1) of proton-proton collisions at root s = 13 TeV, recorded by the CMS experiment at the LHC in 2015. Two jets are required in each event, providing good sensitivity to strong production of gluinos and squarks. The search regions, sensitive to a range of different new physics scenarios, are defined using the number of jets tagged as originating from bottom quarks, the sum of the magnitudes of the transverse momenta of the jets, the imbalance in the overall transverse momentum in the event, and the invariant mass of opposite-sign, same-flavor lepton pairs. The event yields observed in data are consistent with the expected background contributions from standard model processes. These results are used to derive limits in terms of R-parity conserving simplified models of supersymmetry that describe strong production of gluinos and squarks. Model-independent limits are presented to facilitate the reinterpretation of the results in a broad range of scenarios for physics beyond the standard model.",
journal = "European Physical Journal C. Particles and Fields",
title = "Search for new phenomena with multiple charged leptons in proton-proton collisions at root s=13TeV",
volume = "77",
number = "9",
doi = "10.1140/epjc/s10052-017-5182-1"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Search for new phenomena with multiple charged leptons in proton-proton collisions at root s=13TeV. in European Physical Journal C. Particles and Fields, 77(9).
https://doi.org/10.1140/epjc/s10052-017-5182-1
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for new phenomena with multiple charged leptons in proton-proton collisions at root s=13TeV. in European Physical Journal C. Particles and Fields. 2017;77(9).
doi:10.1140/epjc/s10052-017-5182-1 .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for new phenomena with multiple charged leptons in proton-proton collisions at root s=13TeV" in European Physical Journal C. Particles and Fields, 77, no. 9 (2017),
https://doi.org/10.1140/epjc/s10052-017-5182-1 . .
 12 2 9 8

Measurement of the production cross section of a W boson in association with two b jets in pp collisions at root s=8TeV

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1533
AB  - The production cross section of a W boson in association with two b jets is measured using a sample of proton-proton collisions at root s = 8 TeV collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8 fb(-1). The W bosons are reconstructed via their leptonic decays, W - GT l(v) where l = mu or e. The fiducial region studied contains exactly one lepton with transverse momentum pT(l) GT 30 GeV and pseudorapidity |eta(l)| LT 2.1, with exactly two b jets with pT GT 25 GeV and |eta(l)| LT 2.4 and no other jets with pT GT 25 GeV and |eta(l)| LT 4.7. The cross section is measured to be sigma(pp - GT W(lv)+b LT (b)over bar GT ) = 0.64 +/- 0.03 (stat) +/- 0.10 (syst) +/- 0.06 (theo) +/- 0.02 (lumi) pb, in agreement with standard model predictions.
T2  - European Physical Journal C. Particles and Fields
T1  - Measurement of the production cross section of a W boson in association with two b jets in pp collisions at root s=8TeV
VL  - 77
IS  - 2
DO  - 10.1140/epjc/s10052-016-4573-z
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "The production cross section of a W boson in association with two b jets is measured using a sample of proton-proton collisions at root s = 8 TeV collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8 fb(-1). The W bosons are reconstructed via their leptonic decays, W - GT l(v) where l = mu or e. The fiducial region studied contains exactly one lepton with transverse momentum pT(l) GT 30 GeV and pseudorapidity |eta(l)| LT 2.1, with exactly two b jets with pT GT 25 GeV and |eta(l)| LT 2.4 and no other jets with pT GT 25 GeV and |eta(l)| LT 4.7. The cross section is measured to be sigma(pp - GT W(lv)+b LT (b)over bar GT ) = 0.64 +/- 0.03 (stat) +/- 0.10 (syst) +/- 0.06 (theo) +/- 0.02 (lumi) pb, in agreement with standard model predictions.",
journal = "European Physical Journal C. Particles and Fields",
title = "Measurement of the production cross section of a W boson in association with two b jets in pp collisions at root s=8TeV",
volume = "77",
number = "2",
doi = "10.1140/epjc/s10052-016-4573-z"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Measurement of the production cross section of a W boson in association with two b jets in pp collisions at root s=8TeV. in European Physical Journal C. Particles and Fields, 77(2).
https://doi.org/10.1140/epjc/s10052-016-4573-z
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Measurement of the production cross section of a W boson in association with two b jets in pp collisions at root s=8TeV. in European Physical Journal C. Particles and Fields. 2017;77(2).
doi:10.1140/epjc/s10052-016-4573-z .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Measurement of the production cross section of a W boson in association with two b jets in pp collisions at root s=8TeV" in European Physical Journal C. Particles and Fields, 77, no. 2 (2017),
https://doi.org/10.1140/epjc/s10052-016-4573-z . .
 2 11 15 13

Search for dijet resonances in proton-proton collisions at root s=13 TeV and constraints on dark matter and other models

(2017)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1594
AB  - A search is presented for narrow resonances decaying to dijet final states in proton-proton collisions at root s = 13 TeV using data corresponding to an integrated luminosity of 12.9 fb(-1). The dijet mass spectrum is well described by a smooth parameterization and no significant evidence for the production of new particles is observed. Upper limits at 95% confidence level are reported on the production cross section for narrow resonances with masses above 0.6TeV. In the context of specific models, the limits exclude string resonances with masses below 7.4TeV, scalar diquarks below 6.9TeV, axigluons and colorons below 5.5TeV, excited quarks below 5.4TeV, color-octet scalars below 3.OTeV, W bosons below 2.7 TeV, Z bosons below 2.1 TeV and between 2.3 and 2.6 TeV, and RS gravitons below 1.9 TeV. These extend previous limits in the dijet channel. Vector and axial-vector mediators in a simplified model of interactions between quarks and dark matter are excluded below 2.0 TeV. The first limits in the dijet channel on dark matter mediators are presented as functions of dark matter mass and are compared to the exclusions of dark matter in direct detection experiments. (C) 2017 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license.
T2  - Physics Letters B
T1  - Search for dijet resonances in proton-proton collisions at root s=13 TeV and constraints on dark matter and other models
VL  - 769
SP  - 520
EP  - 542
DO  - 10.1016/j.physletb.2017.02.012
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "A search is presented for narrow resonances decaying to dijet final states in proton-proton collisions at root s = 13 TeV using data corresponding to an integrated luminosity of 12.9 fb(-1). The dijet mass spectrum is well described by a smooth parameterization and no significant evidence for the production of new particles is observed. Upper limits at 95% confidence level are reported on the production cross section for narrow resonances with masses above 0.6TeV. In the context of specific models, the limits exclude string resonances with masses below 7.4TeV, scalar diquarks below 6.9TeV, axigluons and colorons below 5.5TeV, excited quarks below 5.4TeV, color-octet scalars below 3.OTeV, W bosons below 2.7 TeV, Z bosons below 2.1 TeV and between 2.3 and 2.6 TeV, and RS gravitons below 1.9 TeV. These extend previous limits in the dijet channel. Vector and axial-vector mediators in a simplified model of interactions between quarks and dark matter are excluded below 2.0 TeV. The first limits in the dijet channel on dark matter mediators are presented as functions of dark matter mass and are compared to the exclusions of dark matter in direct detection experiments. (C) 2017 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license.",
journal = "Physics Letters B",
title = "Search for dijet resonances in proton-proton collisions at root s=13 TeV and constraints on dark matter and other models",
volume = "769",
pages = "520-542",
doi = "10.1016/j.physletb.2017.02.012"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Search for dijet resonances in proton-proton collisions at root s=13 TeV and constraints on dark matter and other models. in Physics Letters B, 769, 520-542.
https://doi.org/10.1016/j.physletb.2017.02.012
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for dijet resonances in proton-proton collisions at root s=13 TeV and constraints on dark matter and other models. in Physics Letters B. 2017;769:520-542.
doi:10.1016/j.physletb.2017.02.012 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for dijet resonances in proton-proton collisions at root s=13 TeV and constraints on dark matter and other models" in Physics Letters B, 769 (2017):520-542,
https://doi.org/10.1016/j.physletb.2017.02.012 . .
 23 78 94 104

Suppression and azimuthal anisotropy of prompt and nonprompt J/psi production in PbPb collisions at root S-NN=2.76 TeV

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1530
AB  - The nuclear modification factor R-AA and the azimuthal anisotropy coefficient v(2) ofprompt and nonprompt (i.e. those from decays of b hadrons) J/psi mesons, measured from PbPb and pp collisions at root S-NN = 2.76 rfeV at itheLHC, are reported. The results are presented in several event centrality intervals and several kinematic regions, for transverse momenta p(T) GT 6.5 GeV/c and rapidity vertical bar y vertical bar LT 2.4, extending down to p(T) = 3 GeV/c in the 1.6 LT vertical bar y vertical bar LT 2.4 range. The v(2) of prompt J/psi is found to be nonzero, but with no strong dependence on centrality, rapidity, or p(T) over the full kinematic range studied. The measured v(2) of nonprompt J/psi is consistent with zero. The R-AA of prompt J/psi exhibits a suppression that increases from peripheral to central collisions but does not vary strongly as a function of either y or pT in the fiducial range. The nonprompt J/psi RAA shows a suppression which becomes stronger as rapidity or p(T) increases. The v(2) and R-AA of open and hidden charm, and of open charm and beauty, are compared.
T2  - European Physical Journal C. Particles and Fields
T1  - Suppression and azimuthal anisotropy of prompt and nonprompt J/psi production in PbPb collisions at root S-NN=2.76 TeV
VL  - 77
IS  - 4
DO  - 10.1140/epjc/s10052-017-4781-1
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "The nuclear modification factor R-AA and the azimuthal anisotropy coefficient v(2) ofprompt and nonprompt (i.e. those from decays of b hadrons) J/psi mesons, measured from PbPb and pp collisions at root S-NN = 2.76 rfeV at itheLHC, are reported. The results are presented in several event centrality intervals and several kinematic regions, for transverse momenta p(T) GT 6.5 GeV/c and rapidity vertical bar y vertical bar LT 2.4, extending down to p(T) = 3 GeV/c in the 1.6 LT vertical bar y vertical bar LT 2.4 range. The v(2) of prompt J/psi is found to be nonzero, but with no strong dependence on centrality, rapidity, or p(T) over the full kinematic range studied. The measured v(2) of nonprompt J/psi is consistent with zero. The R-AA of prompt J/psi exhibits a suppression that increases from peripheral to central collisions but does not vary strongly as a function of either y or pT in the fiducial range. The nonprompt J/psi RAA shows a suppression which becomes stronger as rapidity or p(T) increases. The v(2) and R-AA of open and hidden charm, and of open charm and beauty, are compared.",
journal = "European Physical Journal C. Particles and Fields",
title = "Suppression and azimuthal anisotropy of prompt and nonprompt J/psi production in PbPb collisions at root S-NN=2.76 TeV",
volume = "77",
number = "4",
doi = "10.1140/epjc/s10052-017-4781-1"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Suppression and azimuthal anisotropy of prompt and nonprompt J/psi production in PbPb collisions at root S-NN=2.76 TeV. in European Physical Journal C. Particles and Fields, 77(4).
https://doi.org/10.1140/epjc/s10052-017-4781-1
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Suppression and azimuthal anisotropy of prompt and nonprompt J/psi production in PbPb collisions at root S-NN=2.76 TeV. in European Physical Journal C. Particles and Fields. 2017;77(4).
doi:10.1140/epjc/s10052-017-4781-1 .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Suppression and azimuthal anisotropy of prompt and nonprompt J/psi production in PbPb collisions at root S-NN=2.76 TeV" in European Physical Journal C. Particles and Fields, 77, no. 4 (2017),
https://doi.org/10.1140/epjc/s10052-017-4781-1 . .
 1 54 53 67

Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 TeV and combination with 8 TeV data

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1547
AB  - A search for narrow resonances in dielectron and dimuon invariant mass spectra has been performed using data obtained from proton-proton collisions at root s = 13 TeV collected with the CMS detector. The integrated luminosity for the dielectron sample is 2.7 fb(-1) and for the dimuon sample 2.9 fb(-1). The sensitivity of the search is increased by combining these data with a previously analyzed set of data obtained at root s = 8 TeV and corresponding to a luminosity of 20 fb(-1). No evidence for non-standard-model physics is found, either in the 13 TeV data set alone, or in the combined data set. Upper limits on the product of production cross section and branching fraction have also been calculated in a model-independent manner to enable interpretation in models predicting a narrow dielectron or dimuon resonance structure. Limits are set on the masses of hypothetical particles that could appear in new-physics scenarios. For the Z(SSM) particle, which arises in the sequential standard model, and for the superstring inspired Z(psi) particle, 95% confidence level lower mass limits for the combined data sets and combined channels are found to be 3.37 and 2.82 TeV, respectively. The corresponding limits for the lightest Kaluza-Klein graviton arising in the Randall-Sundrum model of extra dimensions with coupling parameters 0.01 and 0.10 are 1.46 and 3.11 TeV, respectively. These results significantly exceed the limits based on the 8 TeV LHC data. (C) 2017 The Author. Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 TeV and combination with 8 TeV data
VL  - 768
SP  - 57
EP  - 80
DO  - 10.1016/j.physletb.2017.02.010
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "A search for narrow resonances in dielectron and dimuon invariant mass spectra has been performed using data obtained from proton-proton collisions at root s = 13 TeV collected with the CMS detector. The integrated luminosity for the dielectron sample is 2.7 fb(-1) and for the dimuon sample 2.9 fb(-1). The sensitivity of the search is increased by combining these data with a previously analyzed set of data obtained at root s = 8 TeV and corresponding to a luminosity of 20 fb(-1). No evidence for non-standard-model physics is found, either in the 13 TeV data set alone, or in the combined data set. Upper limits on the product of production cross section and branching fraction have also been calculated in a model-independent manner to enable interpretation in models predicting a narrow dielectron or dimuon resonance structure. Limits are set on the masses of hypothetical particles that could appear in new-physics scenarios. For the Z(SSM) particle, which arises in the sequential standard model, and for the superstring inspired Z(psi) particle, 95% confidence level lower mass limits for the combined data sets and combined channels are found to be 3.37 and 2.82 TeV, respectively. The corresponding limits for the lightest Kaluza-Klein graviton arising in the Randall-Sundrum model of extra dimensions with coupling parameters 0.01 and 0.10 are 1.46 and 3.11 TeV, respectively. These results significantly exceed the limits based on the 8 TeV LHC data. (C) 2017 The Author. Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 TeV and combination with 8 TeV data",
volume = "768",
pages = "57-80",
doi = "10.1016/j.physletb.2017.02.010"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 TeV and combination with 8 TeV data. in Physics Letters B, 768, 57-80.
https://doi.org/10.1016/j.physletb.2017.02.010
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 TeV and combination with 8 TeV data. in Physics Letters B. 2017;768:57-80.
doi:10.1016/j.physletb.2017.02.010 .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 TeV and combination with 8 TeV data" in Physics Letters B, 768 (2017):57-80,
https://doi.org/10.1016/j.physletb.2017.02.010 . .
 2 47 73 69

Searches for pair production of third-generation squarks in root s=13 TeV pp collisions

(2017)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1587
AB  - Searches are presented for direct production of top or bottom squark pairs in proton-proton collisions at the CERN LHC. Two searches, based on complementary techniques, are performed in all-jet final states that are characterized by a significant imbalance in transverse momentum. An additional search requires the presence of a charged lepton isolated from other activity in the event. The data were collected in 2015 at a centre-of-mass energy of 13 TeV with the CMS detector and correspond to an integrated luminosity of 2.3 fb(-1). No statistically significant excess of events is found beyond the expected contribution from standard model processes. Exclusion limits are set in the context of simplified models of top or bottom squark pair production. Models with top and bottom squark masses up to 830 and 890 GeV, respectively, are probed for light neutralinos. For models with top squark masses of 675 GeV, neutralino masses up to 260 GeV are excluded at 95% confidence level.
T2  - European Physical Journal C. Particles and Fields
T1  - Searches for pair production of third-generation squarks in root s=13 TeV pp collisions
VL  - 77
IS  - 5
DO  - 10.1140/epjc/s10052-017-4853-2
ER  - 
@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "Searches are presented for direct production of top or bottom squark pairs in proton-proton collisions at the CERN LHC. Two searches, based on complementary techniques, are performed in all-jet final states that are characterized by a significant imbalance in transverse momentum. An additional search requires the presence of a charged lepton isolated from other activity in the event. The data were collected in 2015 at a centre-of-mass energy of 13 TeV with the CMS detector and correspond to an integrated luminosity of 2.3 fb(-1). No statistically significant excess of events is found beyond the expected contribution from standard model processes. Exclusion limits are set in the context of simplified models of top or bottom squark pair production. Models with top and bottom squark masses up to 830 and 890 GeV, respectively, are probed for light neutralinos. For models with top squark masses of 675 GeV, neutralino masses up to 260 GeV are excluded at 95% confidence level.",
journal = "European Physical Journal C. Particles and Fields",
title = "Searches for pair production of third-generation squarks in root s=13 TeV pp collisions",
volume = "77",
number = "5",
doi = "10.1140/epjc/s10052-017-4853-2"
}
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Searches for pair production of third-generation squarks in root s=13 TeV pp collisions. in European Physical Journal C. Particles and Fields, 77(5).
https://doi.org/10.1140/epjc/s10052-017-4853-2
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Searches for pair production of third-generation squarks in root s=13 TeV pp collisions. in European Physical Journal C. Particles and Fields. 2017;77(5).
doi:10.1140/epjc/s10052-017-4853-2 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Searches for pair production of third-generation squarks in root s=13 TeV pp collisions" in European Physical Journal C. Particles and Fields, 77, no. 5 (2017),
https://doi.org/10.1140/epjc/s10052-017-4853-2 . .
 1 15 24 28

Suppression of gamma(1S), gamma(2S), and gamma(3S) quarkonium states in PbPb collisions at root S-NN=2.76TeV

(2017)

TY  - JOUR
AU  - Khachatryan, V.
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Rekovic, V.
AU  - Milenović, Predrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1619
AB  - The production yields of gamma(1S), gamma(2S), and gamma(3S) quarkonium states are measured through their decays into muon pairs in the CMS detector, in PbPb and pp collisions at the centre-of-mass energy per nucleon pair of 2.76TeV. The data correspond to integrated luminosities of 166 mu b(-1) and 5.4 pb(-1) for PbPb and pp collisions, respectively. Differential production cross sections are reported as functions of gamma rapidity y up to 2.4, and transverse momentum PT up to 20 GeV/c. A strong centrality-dependent suppression is observed in PbPb relative to pp collisions, by factors of up to approximate to 2 and 8, for the gamma(1S) and gamma(2S) states, respectively. No significant dependence of this suppression is observed as a function of y or PT. The gamma(3S) state is not observed in PbPb collisions, which corresponds to a suppression for the centrality-integrated data by at least a factor of approximate to 7 at a 95% confidence level. The observed suppression is in agreement with theoretical scenarios modeling the sequential melting of quarkonium states in a quark gluon plasma. (C) 2017 The Author(s). Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Suppression of gamma(1S), gamma(2S), and gamma(3S) quarkonium states in PbPb collisions at root S-NN=2.76TeV
VL  - 770
SP  - 357
EP  - 379
DO  - 10.1016/j.physletb.2017.04.031
ER  - 
@article{
author = "Khachatryan, V. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Rekovic, V. and Milenović, Predrag",
year = "2017",
abstract = "The production yields of gamma(1S), gamma(2S), and gamma(3S) quarkonium states are measured through their decays into muon pairs in the CMS detector, in PbPb and pp collisions at the centre-of-mass energy per nucleon pair of 2.76TeV. The data correspond to integrated luminosities of 166 mu b(-1) and 5.4 pb(-1) for PbPb and pp collisions, respectively. Differential production cross sections are reported as functions of gamma rapidity y up to 2.4, and transverse momentum PT up to 20 GeV/c. A strong centrality-dependent suppression is observed in PbPb relative to pp collisions, by factors of up to approximate to 2 and 8, for the gamma(1S) and gamma(2S) states, respectively. No significant dependence of this suppression is observed as a function of y or PT. The gamma(3S) state is not observed in PbPb collisions, which corresponds to a suppression for the centrality-integrated data by at least a factor of approximate to 7 at a 95% confidence level. The observed suppression is in agreement with theoretical scenarios modeling the sequential melting of quarkonium states in a quark gluon plasma. (C) 2017 The Author(s). Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Suppression of gamma(1S), gamma(2S), and gamma(3S) quarkonium states in PbPb collisions at root S-NN=2.76TeV",
volume = "770",
pages = "357-379",
doi = "10.1016/j.physletb.2017.04.031"
}
Khachatryan, V., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Rekovic, V.,& Milenović, P.. (2017). Suppression of gamma(1S), gamma(2S), and gamma(3S) quarkonium states in PbPb collisions at root S-NN=2.76TeV. in Physics Letters B, 770, 357-379.
https://doi.org/10.1016/j.physletb.2017.04.031
Khachatryan V, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Rekovic V, Milenović P. Suppression of gamma(1S), gamma(2S), and gamma(3S) quarkonium states in PbPb collisions at root S-NN=2.76TeV. in Physics Letters B. 2017;770:357-379.
doi:10.1016/j.physletb.2017.04.031 .
Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Rekovic, V., Milenović, Predrag, "Suppression of gamma(1S), gamma(2S), and gamma(3S) quarkonium states in PbPb collisions at root S-NN=2.76TeV" in Physics Letters B, 770 (2017):357-379,
https://doi.org/10.1016/j.physletb.2017.04.031 . .
 2 54 66 78