TY  - JOUR
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J.
AU  - Bergauer, T.
AU  - Chatterjee, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13121
AB  - The azimuthal anisotropy of Υ(1S) mesons in high-multiplicity proton-lead collisions is studied using data collected by the CMS experiment at a nucleon-nucleon center-of-mass energy of 8.16 TeV. The Υ(1S) mesons are reconstructed using their dimuon decay channel. The anisotropy is characterized by the second Fourier harmonic coefficients, found using a two-particle correlation technique, in which the Υ(1S) mesons are correlated with charged hadrons. A large pseudorapidity gap is used to suppress short-range correlations. Nonflow contamination from the dijet background is removed using a low-multiplicity subtraction method, and the results are presented as a function of Υ(1S) transverse momentum. The azimuthal anisotropies are smaller than those found for charmonia in proton-lead collisions at the same collision energy, but are consistent with values found for Υ(1S) mesons in lead-lead interactions at a nucleon-nucleon center-of-mass energy of 5.02 TeV.
T2  - Physics Letters B
T1  - Study of azimuthal anisotropy of Υ(1S) mesons in pPb collisions at √𝑠NN = 8.16 TeV
VL  - 850
SP  - 138518
DO  - 10.1016/j.physletb.2024.138518
ER  - 

@article{
author = "Tumasyan, A. and Adam, W. and Andrejkovic, J. and Bergauer, T. and Chatterjee, S. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2024",
abstract = "The azimuthal anisotropy of Υ(1S) mesons in high-multiplicity proton-lead collisions is studied using data collected by the CMS experiment at a nucleon-nucleon center-of-mass energy of 8.16 TeV. The Υ(1S) mesons are reconstructed using their dimuon decay channel. The anisotropy is characterized by the second Fourier harmonic coefficients, found using a two-particle correlation technique, in which the Υ(1S) mesons are correlated with charged hadrons. A large pseudorapidity gap is used to suppress short-range correlations. Nonflow contamination from the dijet background is removed using a low-multiplicity subtraction method, and the results are presented as a function of Υ(1S) transverse momentum. The azimuthal anisotropies are smaller than those found for charmonia in proton-lead collisions at the same collision energy, but are consistent with values found for Υ(1S) mesons in lead-lead interactions at a nucleon-nucleon center-of-mass energy of 5.02 TeV.",
journal = "Physics Letters B",
title = "Study of azimuthal anisotropy of Υ(1S) mesons in pPb collisions at √𝑠NN = 8.16 TeV",
volume = "850",
pages = "138518",
doi = "10.1016/j.physletb.2024.138518"
}

Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., Adžić, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2024). Study of azimuthal anisotropy of Υ(1S) mesons in pPb collisions at √𝑠NN = 8.16 TeV. in Physics Letters B, 850, 138518.
https://doi.org/10.1016/j.physletb.2024.138518

Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Chatterjee S, Adžić P, Đorđević M, Milenović P, Milošević J. Study of azimuthal anisotropy of Υ(1S) mesons in pPb collisions at √𝑠NN = 8.16 TeV. in Physics Letters B. 2024;850:138518.
doi:10.1016/j.physletb.2024.138518 .

Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Study of azimuthal anisotropy of Υ(1S) mesons in pPb collisions at √𝑠NN = 8.16 TeV" in Physics Letters B, 850 (2024):138518,
https://doi.org/10.1016/j.physletb.2024.138518 . .

TY  - JOUR
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J.
AU  - Bergauer, T.
AU  - Chatterjee, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Nađđerđ, Laslo
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13093
AB  - The hydrodynamic flow-like behavior of charged hadrons in high-energy lead-lead collisions is studied through multiparticle correlations. The elliptic anisotropy values based on different orders of multiparticle cumulants, v 2{2k}, are measured up to the tenth order (k = 5) as functions of the collision centrality at a nucleon-nucleon center-of-mass energy of      s NN     $$ \sqrt{s_{\textrm{NN}}} $$  = 5.02 TeV. The data were recorded by the CMS experiment at the LHC and correspond to an integrated luminosity of 0.607 nb −1. A hierarchy is observed between the coefficients, with v 2{2} > v 2{4} ≳ v 2{6} ≳ v 2{8} ≳ v 2{10}. Based on these results, centrality-dependent moments for the fluctuation-driven event-by-event v 2 distribution are determined, including the skewness, kurtosis and, for the first time, superskewness. Assuming a hydrodynamic expansion of the produced medium, these moments directly probe the initial-state geometry in high-energy nucleus-nucleus collisions.
T2  - Journal of High Energy Physics
T1  - Higher-order moments of the elliptic flow distribution in PbPb collisions at √sNN = 5.02 TeV
VL  - 2024
IS  - 2
SP  - 1
EP  - 45
DO  - 10.1007/JHEP02(2024)106
ER  - 

@article{
author = "Tumasyan, A. and Adam, W. and Andrejkovic, J. and Bergauer, T. and Chatterjee, S. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Nađđerđ, Laslo",
year = "2024",
abstract = "The hydrodynamic flow-like behavior of charged hadrons in high-energy lead-lead collisions is studied through multiparticle correlations. The elliptic anisotropy values based on different orders of multiparticle cumulants, v 2{2k}, are measured up to the tenth order (k = 5) as functions of the collision centrality at a nucleon-nucleon center-of-mass energy of      s NN     $$ \sqrt{s_{\textrm{NN}}} $$  = 5.02 TeV. The data were recorded by the CMS experiment at the LHC and correspond to an integrated luminosity of 0.607 nb −1. A hierarchy is observed between the coefficients, with v 2{2} > v 2{4} ≳ v 2{6} ≳ v 2{8} ≳ v 2{10}. Based on these results, centrality-dependent moments for the fluctuation-driven event-by-event v 2 distribution are determined, including the skewness, kurtosis and, for the first time, superskewness. Assuming a hydrodynamic expansion of the produced medium, these moments directly probe the initial-state geometry in high-energy nucleus-nucleus collisions.",
journal = "Journal of High Energy Physics",
title = "Higher-order moments of the elliptic flow distribution in PbPb collisions at √sNN = 5.02 TeV",
volume = "2024",
number = "2",
pages = "1-45",
doi = "10.1007/JHEP02(2024)106"
}

Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., Adžić, P., Đorđević, M., Milenović, P., Milošević, J.,& Nađđerđ, L.. (2024). Higher-order moments of the elliptic flow distribution in PbPb collisions at √sNN = 5.02 TeV. in Journal of High Energy Physics, 2024(2), 1-45.
https://doi.org/10.1007/JHEP02(2024)106

Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Chatterjee S, Adžić P, Đorđević M, Milenović P, Milošević J, Nađđerđ L. Higher-order moments of the elliptic flow distribution in PbPb collisions at √sNN = 5.02 TeV. in Journal of High Energy Physics. 2024;2024(2):1-45.
doi:10.1007/JHEP02(2024)106 .

Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Nađđerđ, Laslo, "Higher-order moments of the elliptic flow distribution in PbPb collisions at √sNN = 5.02 TeV" in Journal of High Energy Physics, 2024, no. 2 (2024):1-45,
https://doi.org/10.1007/JHEP02(2024)106 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J. W.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Milošević, Vukašin
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9868
AB  - A fiducial cross section for Wγ production in proton-proton collisions is measured at a center-of-mass energy of 13 TeV in 137  fb−1 of data collected using the CMS detector at the LHC. The W→eν and μν decay modes are used in a maximum-likelihood fit to the lepton-photon invariant mass distribution to extract the combined cross section. The measured cross section is compared with theoretical expectations at next-to-leading order in quantum chromodynamics. In addition, 95% confidence level intervals are reported for anomalous triple-gauge couplings within the framework of effective field theory.
T2  - Physical Review Letters
T1  - Measurement of the Wγ Production Cross Section in Proton-Proton Collisions at s=13 TeV and Constraints on Effective Field Theory Coefficients
VL  - 126
SP  - 252002
DO  - 10.1103/PhysRevLett.126.252002
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Andrejkovic, J. W. and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Milošević, Vukašin",
year = "2021",
abstract = "A fiducial cross section for Wγ production in proton-proton collisions is measured at a center-of-mass energy of 13 TeV in 137  fb−1 of data collected using the CMS detector at the LHC. The W→eν and μν decay modes are used in a maximum-likelihood fit to the lepton-photon invariant mass distribution to extract the combined cross section. The measured cross section is compared with theoretical expectations at next-to-leading order in quantum chromodynamics. In addition, 95% confidence level intervals are reported for anomalous triple-gauge couplings within the framework of effective field theory.",
journal = "Physical Review Letters",
title = "Measurement of the Wγ Production Cross Section in Proton-Proton Collisions at s=13 TeV and Constraints on Effective Field Theory Coefficients",
volume = "126",
pages = "252002",
doi = "10.1103/PhysRevLett.126.252002"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P., Milošević, J.,& Milošević, V.. (2021). Measurement of the Wγ Production Cross Section in Proton-Proton Collisions at s=13 TeV and Constraints on Effective Field Theory Coefficients. in Physical Review Letters, 126, 252002.
https://doi.org/10.1103/PhysRevLett.126.252002

Sirunyan AM, Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J, Milošević V. Measurement of the Wγ Production Cross Section in Proton-Proton Collisions at s=13 TeV and Constraints on Effective Field Theory Coefficients. in Physical Review Letters. 2021;126:252002.
doi:10.1103/PhysRevLett.126.252002 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Milošević, Vukašin, "Measurement of the Wγ Production Cross Section in Proton-Proton Collisions at s=13 TeV and Constraints on Effective Field Theory Coefficients" in Physical Review Letters, 126 (2021):252002,
https://doi.org/10.1103/PhysRevLett.126.252002 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J. W.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Milošević, Vukašin
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9867
AB  - The Ξb−π+π− invariant mass spectrum is investigated with an event sample of proton-proton collisions at s=13  TeV, collected by the CMS experiment at the LHC in 2016–2018 and corresponding to an integrated luminosity of 140  fb−1. The ground state Ξb− is reconstructed via its decays to J/ψΞ− and J/ψΛK−. A narrow resonance, labeled Ξb(6100)−, is observed at a Ξb−π+π− invariant mass of 6100.3±0.2(stat)±0.1(syst)±0.6(Ξb−)  MeV, where the last uncertainty reflects the precision of the Ξb− baryon mass. The upper limit on the Ξb(6100)− natural width is determined to be 1.9  MeV at 95% confidence level. The low Ξb(6100)− signal yield observed in data does not allow a measurement of the quantum numbers of the new state. However, following analogies with the established excited Ξc baryon states, the new Ξb(6100)− resonance and its decay sequence are consistent with the orbitally excited Ξb− baryon, with spin and parity quantum numbers JP=3/2−.
T2  - Physical Review Letters
T1  - Observation of a New Excited Beauty Strange Baryon Decaying to Ξb−π+π−
VL  - 126
DO  - 10.1103/PhysRevLett.126.252003
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Andrejkovic, J. W. and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Milošević, Vukašin",
year = "2021",
abstract = "The Ξb−π+π− invariant mass spectrum is investigated with an event sample of proton-proton collisions at s=13  TeV, collected by the CMS experiment at the LHC in 2016–2018 and corresponding to an integrated luminosity of 140  fb−1. The ground state Ξb− is reconstructed via its decays to J/ψΞ− and J/ψΛK−. A narrow resonance, labeled Ξb(6100)−, is observed at a Ξb−π+π− invariant mass of 6100.3±0.2(stat)±0.1(syst)±0.6(Ξb−)  MeV, where the last uncertainty reflects the precision of the Ξb− baryon mass. The upper limit on the Ξb(6100)− natural width is determined to be 1.9  MeV at 95% confidence level. The low Ξb(6100)− signal yield observed in data does not allow a measurement of the quantum numbers of the new state. However, following analogies with the established excited Ξc baryon states, the new Ξb(6100)− resonance and its decay sequence are consistent with the orbitally excited Ξb− baryon, with spin and parity quantum numbers JP=3/2−.",
journal = "Physical Review Letters",
title = "Observation of a New Excited Beauty Strange Baryon Decaying to Ξb−π+π−",
volume = "126",
doi = "10.1103/PhysRevLett.126.252003"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P., Milošević, J.,& Milošević, V.. (2021). Observation of a New Excited Beauty Strange Baryon Decaying to Ξb−π+π−. in Physical Review Letters, 126.
https://doi.org/10.1103/PhysRevLett.126.252003

Sirunyan AM, Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J, Milošević V. Observation of a New Excited Beauty Strange Baryon Decaying to Ξb−π+π−. in Physical Review Letters. 2021;126.
doi:10.1103/PhysRevLett.126.252003 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Milošević, Vukašin, "Observation of a New Excited Beauty Strange Baryon Decaying to Ξb−π+π−" in Physical Review Letters, 126 (2021),
https://doi.org/10.1103/PhysRevLett.126.252003 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9864
AB  - Jet production in lead-lead (PbPb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV is studied with the CMS detector at the LHC, using PbPb and pp data samples corresponding to integrated luminosities of 404 μb −1 and 27.4 pb −1, respectively. Jets with different areas are reconstructed using the anti-k T algorithm by varying the distance parameter R. The measurements are performed using jets with transverse momenta (p T) greater than 200 GeV and in a pseudorapidity range of |η| < 2. To reveal the medium modification of the jet spectra in PbPb collisions, the properly normalized ratio of spectra from PbPb and pp data is used to extract jet nuclear modification factors as functions of the PbPb collision centrality, p T and, for the first time, as a function of R up to 1.0. For the most central collisions, a strong suppression is observed for high-p T jets reconstructed with all distance parameters, implying that a significant amount of jet energy is scattered to large angles. The dependence of jet suppression on R is expected to be sensitive to both the jet energy loss mechanism and the medium response, and so the data are compared to several modern event generators and analytic calculations. The models considered do not fully reproduce the data.
T2  - Journal of High Energy Physics
T1  - First measurement of large area jet transverse momentum spectra in heavy-ion collisions
VL  - 2021
IS  - 5
SP  - 284
DO  - 10.1007/JHEP05(2021)284
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2021",
abstract = "Jet production in lead-lead (PbPb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV is studied with the CMS detector at the LHC, using PbPb and pp data samples corresponding to integrated luminosities of 404 μb −1 and 27.4 pb −1, respectively. Jets with different areas are reconstructed using the anti-k T algorithm by varying the distance parameter R. The measurements are performed using jets with transverse momenta (p T) greater than 200 GeV and in a pseudorapidity range of |η| < 2. To reveal the medium modification of the jet spectra in PbPb collisions, the properly normalized ratio of spectra from PbPb and pp data is used to extract jet nuclear modification factors as functions of the PbPb collision centrality, p T and, for the first time, as a function of R up to 1.0. For the most central collisions, a strong suppression is observed for high-p T jets reconstructed with all distance parameters, implying that a significant amount of jet energy is scattered to large angles. The dependence of jet suppression on R is expected to be sensitive to both the jet energy loss mechanism and the medium response, and so the data are compared to several modern event generators and analytic calculations. The models considered do not fully reproduce the data.",
journal = "Journal of High Energy Physics",
title = "First measurement of large area jet transverse momentum spectra in heavy-ion collisions",
volume = "2021",
number = "5",
pages = "284",
doi = "10.1007/JHEP05(2021)284"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M.. (2021). First measurement of large area jet transverse momentum spectra in heavy-ion collisions. in Journal of High Energy Physics, 2021(5), 284.
https://doi.org/10.1007/JHEP05(2021)284

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. First measurement of large area jet transverse momentum spectra in heavy-ion collisions. in Journal of High Energy Physics. 2021;2021(5):284.
doi:10.1007/JHEP05(2021)284 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Stojanović, Milan, "First measurement of large area jet transverse momentum spectra in heavy-ion collisions" in Journal of High Energy Physics, 2021, no. 5 (2021):284,
https://doi.org/10.1007/JHEP05(2021)284 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9862
AB  - Differential cross sections for the Drell-Yan process, including Z boson production, using the dimuon decay channel are measured in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of 8.16 TeV. A data sample recorded with the CMS detector at the LHC is used, corresponding to an integrated luminosity of 173 nb −1. The differential cross section as a function of the dimuon mass is measured in the range 15–600 GeV, for the first time in proton-nucleus collisions. It is also reported as a function of dimuon rapidity over the mass ranges 15–60 GeV and 60–120 GeV, and ratios for the p-going over the Pb-going beam directions are built. In both mass ranges, the differential cross sections as functions of the dimuon transverse momentum p T and of a geometric variable ϕ * are measured, where ϕ * highly correlates with p T but is determined with higher precision. In the Z mass region, the rapidity dependence of the data indicate a modification of the distribution of partons within a lead nucleus as compared to the proton case. The data are more precise than predictions based upon current models of parton distributions.
T2  - Journal of High Energy Physics
T1  - Study of Drell-Yan dimuon production in proton-lead collisions at √sNN = 8.16 TeV
VL  - 2021
IS  - 5
SP  - 182
DO  - 10.1007/JHEP05(2021)182
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "Differential cross sections for the Drell-Yan process, including Z boson production, using the dimuon decay channel are measured in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of 8.16 TeV. A data sample recorded with the CMS detector at the LHC is used, corresponding to an integrated luminosity of 173 nb −1. The differential cross section as a function of the dimuon mass is measured in the range 15–600 GeV, for the first time in proton-nucleus collisions. It is also reported as a function of dimuon rapidity over the mass ranges 15–60 GeV and 60–120 GeV, and ratios for the p-going over the Pb-going beam directions are built. In both mass ranges, the differential cross sections as functions of the dimuon transverse momentum p T and of a geometric variable ϕ * are measured, where ϕ * highly correlates with p T but is determined with higher precision. In the Z mass region, the rapidity dependence of the data indicate a modification of the distribution of partons within a lead nucleus as compared to the proton case. The data are more precise than predictions based upon current models of parton distributions.",
journal = "Journal of High Energy Physics",
title = "Study of Drell-Yan dimuon production in proton-lead collisions at √sNN = 8.16 TeV",
volume = "2021",
number = "5",
pages = "182",
doi = "10.1007/JHEP05(2021)182"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Study of Drell-Yan dimuon production in proton-lead collisions at √sNN = 8.16 TeV. in Journal of High Energy Physics, 2021(5), 182.
https://doi.org/10.1007/JHEP05(2021)182

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J. Study of Drell-Yan dimuon production in proton-lead collisions at √sNN = 8.16 TeV. in Journal of High Energy Physics. 2021;2021(5):182.
doi:10.1007/JHEP05(2021)182 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Study of Drell-Yan dimuon production in proton-lead collisions at √sNN = 8.16 TeV" in Journal of High Energy Physics, 2021, no. 5 (2021):182,
https://doi.org/10.1007/JHEP05(2021)182 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9856
AB  - Measurements of the differential cross sections of Z + jets and γ + jets production, and their ratio, are presented as a function of the boson transverse momentum. Measurements are also presented of the angular distribution between the Z boson and the closest jet. The analysis is based on pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 35.9 fb −1 recorded by the CMS experiment at the LHC. The results, corrected for detector effects, are compared with various theoretical predictions. In general, the predictions at higher orders in perturbation theory show better agreement with the measurements. This work provides the first measurement of the ratio of the differential cross sections of Z + jets and γ + jets production at 13 TeV, as well as the first direct measurement of Z bosons emitted collinearly with a jet.
T2  - Journal of High Energy Physics
T1  - Measurements of the differential cross sections of the production of Z + jets and γ + jets and of Z boson emission collinear with a jet in pp collisions at √s = 13 TeV
VL  - 2021
IS  - 5
SP  - 285
DO  - 10.1007/JHEP05(2021)285
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "Measurements of the differential cross sections of Z + jets and γ + jets production, and their ratio, are presented as a function of the boson transverse momentum. Measurements are also presented of the angular distribution between the Z boson and the closest jet. The analysis is based on pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 35.9 fb −1 recorded by the CMS experiment at the LHC. The results, corrected for detector effects, are compared with various theoretical predictions. In general, the predictions at higher orders in perturbation theory show better agreement with the measurements. This work provides the first measurement of the ratio of the differential cross sections of Z + jets and γ + jets production at 13 TeV, as well as the first direct measurement of Z bosons emitted collinearly with a jet.",
journal = "Journal of High Energy Physics",
title = "Measurements of the differential cross sections of the production of Z + jets and γ + jets and of Z boson emission collinear with a jet in pp collisions at √s = 13 TeV",
volume = "2021",
number = "5",
pages = "285",
doi = "10.1007/JHEP05(2021)285"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Measurements of the differential cross sections of the production of Z + jets and γ + jets and of Z boson emission collinear with a jet in pp collisions at √s = 13 TeV. in Journal of High Energy Physics, 2021(5), 285.
https://doi.org/10.1007/JHEP05(2021)285

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J. Measurements of the differential cross sections of the production of Z + jets and γ + jets and of Z boson emission collinear with a jet in pp collisions at √s = 13 TeV. in Journal of High Energy Physics. 2021;2021(5):285.
doi:10.1007/JHEP05(2021)285 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Measurements of the differential cross sections of the production of Z + jets and γ + jets and of Z boson emission collinear with a jet in pp collisions at √s = 13 TeV" in Journal of High Energy Physics, 2021, no. 5 (2021):285,
https://doi.org/10.1007/JHEP05(2021)285 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Milošević, Vukašin
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9855
AB  - Production cross sections of the Higgs boson are measured in the  $${\mathrm{H}} \rightarrow {\mathrm{Z}} {\mathrm{Z}} \rightarrow 4\ell $$    H → Z Z → 4 ℓ     ( $$\ell ={\mathrm{e}},{{{\upmu }}_{\mathrm{}}^{\mathrm{}}} $$    ℓ = e ,  μ         ) decay channel. A data sample of proton–proton collisions at a center-of-mass energy of 13 $$\,\text {TeV}$$     TeV    , collected by the CMS detector at the LHC and corresponding to an integrated luminosity of 137 $$\,\text {fb}^{-1}$$      fb  - 1       is used. The signal strength modifier  $$\mu $$   μ   , defined as the ratio of the Higgs boson production rate in the  $$4\ell $$    4 ℓ     channel to the standard model (SM) expectation, is measured to be  $$\mu =0.94 \pm 0.07 \,\text {(stat)} ^{+0.09}_{-0.08} \,\text {(syst)} $$    μ = 0.94 ± 0.07   (stat)  - 0.08   + 0.09    (syst)     at a fixed value of  $$m_{{\mathrm{H}}} = 125.38\,\text {GeV} $$     m H  = 125.38  GeV    . The signal strength modifiers for the individual Higgs boson production modes are also reported. The inclusive fiducial cross section for the  $${\mathrm{H}} \rightarrow 4\ell $$    H → 4 ℓ     process is measured to be  $$2.84^{+0.23}_{-0.22} \,\text {(stat)} ^{+0.26}_{-0.21} \,\text {(syst)} \,\text {fb} $$    2 .  84  - 0.22   + 0.23     (stat)  - 0.21   + 0.26    (syst)  fb    , which is compatible with the SM prediction of  $$2.84 \pm 0.15 \,\text {fb} $$    2.84 ± 0.15  fb     for the same fiducial region. Differential cross sections as a function of the transverse momentum and rapidity of the Higgs boson, the number of associated jets, and the transverse momentum of the leading associated jet are measured. A new set of cross section measurements in mutually exclusive categories targeted to identify production mechanisms and kinematical features of the events is presented. The results are in agreement with the SM predictions.
T2  - European Physical Journal C. Particles and Fields
T1  - Measurements of production cross sections of the Higgs boson in the four-lepton final state in proton–proton collisions at √s=13Te
VL  - 81
IS  - 6
SP  - 488
DO  - 10.1140/epjc/s10052-021-09200-x
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Andrejkovic, J. and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Milošević, Vukašin",
year = "2021",
abstract = "Production cross sections of the Higgs boson are measured in the  $${\mathrm{H}} \rightarrow {\mathrm{Z}} {\mathrm{Z}} \rightarrow 4\ell $$    H → Z Z → 4 ℓ     ( $$\ell ={\mathrm{e}},{{{\upmu }}_{\mathrm{}}^{\mathrm{}}} $$    ℓ = e ,  μ         ) decay channel. A data sample of proton–proton collisions at a center-of-mass energy of 13 $$\,\text {TeV}$$     TeV    , collected by the CMS detector at the LHC and corresponding to an integrated luminosity of 137 $$\,\text {fb}^{-1}$$      fb  - 1       is used. The signal strength modifier  $$\mu $$   μ   , defined as the ratio of the Higgs boson production rate in the  $$4\ell $$    4 ℓ     channel to the standard model (SM) expectation, is measured to be  $$\mu =0.94 \pm 0.07 \,\text {(stat)} ^{+0.09}_{-0.08} \,\text {(syst)} $$    μ = 0.94 ± 0.07   (stat)  - 0.08   + 0.09    (syst)     at a fixed value of  $$m_{{\mathrm{H}}} = 125.38\,\text {GeV} $$     m H  = 125.38  GeV    . The signal strength modifiers for the individual Higgs boson production modes are also reported. The inclusive fiducial cross section for the  $${\mathrm{H}} \rightarrow 4\ell $$    H → 4 ℓ     process is measured to be  $$2.84^{+0.23}_{-0.22} \,\text {(stat)} ^{+0.26}_{-0.21} \,\text {(syst)} \,\text {fb} $$    2 .  84  - 0.22   + 0.23     (stat)  - 0.21   + 0.26    (syst)  fb    , which is compatible with the SM prediction of  $$2.84 \pm 0.15 \,\text {fb} $$    2.84 ± 0.15  fb     for the same fiducial region. Differential cross sections as a function of the transverse momentum and rapidity of the Higgs boson, the number of associated jets, and the transverse momentum of the leading associated jet are measured. A new set of cross section measurements in mutually exclusive categories targeted to identify production mechanisms and kinematical features of the events is presented. The results are in agreement with the SM predictions.",
journal = "European Physical Journal C. Particles and Fields",
title = "Measurements of production cross sections of the Higgs boson in the four-lepton final state in proton–proton collisions at √s=13Te",
volume = "81",
number = "6",
pages = "488",
doi = "10.1140/epjc/s10052-021-09200-x"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P., Milošević, J.,& Milošević, V.. (2021). Measurements of production cross sections of the Higgs boson in the four-lepton final state in proton–proton collisions at √s=13Te. in European Physical Journal C. Particles and Fields, 81(6), 488.
https://doi.org/10.1140/epjc/s10052-021-09200-x

Sirunyan AM, Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J, Milošević V. Measurements of production cross sections of the Higgs boson in the four-lepton final state in proton–proton collisions at √s=13Te. in European Physical Journal C. Particles and Fields. 2021;81(6):488.
doi:10.1140/epjc/s10052-021-09200-x .

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Milošević, Vukašin, "Measurements of production cross sections of the Higgs boson in the four-lepton final state in proton–proton collisions at √s=13Te" in European Physical Journal C. Particles and Fields, 81, no. 6 (2021):488,
https://doi.org/10.1140/epjc/s10052-021-09200-x . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Bergauer, T.
AU  - Dragicevic, M.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9854
AB  - Measurements of the total and differential fiducial cross sections for the Z boson decaying into two neutrinos are presented at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV. The data were collected by the CMS detector in 2016 and correspond to an integrated luminosity of 35.9 fb −1. In these measurements, events are selected containing an imbalance in transverse momentum and one or more energetic jets. The fiducial differential cross section is measured as a function of the Z boson transverse momentum. The results are combined with a previous measurement of charged-lepton decays of the Z boson. The measured total fiducial cross section for events with Z boson transverse momentum greater than 200 GeV is     3000  − 170   + 180     $$ {3000}_{-170}^{+180} $$  fb.
T2  - Journal of High Energy Physics
T1  - Measurement of the Z boson differential production cross section using its invisible decay mode (Z → νν¯) in proton-proton collisions at √s = 13 TeV
VL  - 2021
IS  - 5
SP  - 205
DO  - 10.1007/JHEP05(2021)205
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Bergauer, T. and Dragicevic, M. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "Measurements of the total and differential fiducial cross sections for the Z boson decaying into two neutrinos are presented at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV. The data were collected by the CMS detector in 2016 and correspond to an integrated luminosity of 35.9 fb −1. In these measurements, events are selected containing an imbalance in transverse momentum and one or more energetic jets. The fiducial differential cross section is measured as a function of the Z boson transverse momentum. The results are combined with a previous measurement of charged-lepton decays of the Z boson. The measured total fiducial cross section for events with Z boson transverse momentum greater than 200 GeV is     3000  − 170   + 180     $$ {3000}_{-170}^{+180} $$  fb.",
journal = "Journal of High Energy Physics",
title = "Measurement of the Z boson differential production cross section using its invisible decay mode (Z → νν¯) in proton-proton collisions at √s = 13 TeV",
volume = "2021",
number = "5",
pages = "205",
doi = "10.1007/JHEP05(2021)205"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Measurement of the Z boson differential production cross section using its invisible decay mode (Z → νν¯) in proton-proton collisions at √s = 13 TeV. in Journal of High Energy Physics, 2021(5), 205.
https://doi.org/10.1007/JHEP05(2021)205

Sirunyan AM, Tumasyan A, Adam W, Bergauer T, Dragicevic M, Adžić P, Đorđević M, Milenović P, Milošević J. Measurement of the Z boson differential production cross section using its invisible decay mode (Z → νν¯) in proton-proton collisions at √s = 13 TeV. in Journal of High Energy Physics. 2021;2021(5):205.
doi:10.1007/JHEP05(2021)205 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Measurement of the Z boson differential production cross section using its invisible decay mode (Z → νν¯) in proton-proton collisions at √s = 13 TeV" in Journal of High Energy Physics, 2021, no. 5 (2021):205,
https://doi.org/10.1007/JHEP05(2021)205 . .

TY  - JOUR
AU  - Sirunyan, A M
AU  - Tumasyan, A.
AU  - Adam, W
AU  - Andrejkovic, J W
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Milošević, Vukašin
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10163
AB  - The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5, using proton–proton collisions at s=13TeV in 2015 and 2016, is reported. The absolute luminosity scale is measured for individual bunch crossings using beam-separation scans (the van der Meer method), with a relative precision of 1.3 and 1.0% in 2015 and 2016, respectively. The dominant sources of uncertainty are related to residual differences between the measured beam positions and the ones provided by the operational settings of the LHC magnets, the factorizability of the proton bunch spatial density functions in the coordinates transverse to the beam direction, and the modeling of the effect of electromagnetic interactions among protons in the colliding bunches. When applying the van der Meer calibration to the entire run periods, the integrated luminosities when CMS was fully operational are 2.27 and 36.3 fb-1 in 2015 and 2016, with a relative precision of 1.6 and 1.2%, respectively. These are among the most precise luminosity measurements at bunched-beam hadron colliders.
T2  - European Physical Journal C. Particles and Fields
T1  - Precision luminosity measurement in proton–proton collisions at √s=13TeV in 2015 and 2016 at CMS
VL  - 81
IS  - 9
SP  - 800
DO  - 10.1140/epjc/s10052-021-09538-2
ER  - 

@article{
author = "Sirunyan, A M and Tumasyan, A. and Adam, W and Andrejkovic, J W and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Milošević, Vukašin",
year = "2021",
abstract = "The measurement of the luminosity recorded by the CMS detector installed at LHC interaction point 5, using proton–proton collisions at s=13TeV in 2015 and 2016, is reported. The absolute luminosity scale is measured for individual bunch crossings using beam-separation scans (the van der Meer method), with a relative precision of 1.3 and 1.0% in 2015 and 2016, respectively. The dominant sources of uncertainty are related to residual differences between the measured beam positions and the ones provided by the operational settings of the LHC magnets, the factorizability of the proton bunch spatial density functions in the coordinates transverse to the beam direction, and the modeling of the effect of electromagnetic interactions among protons in the colliding bunches. When applying the van der Meer calibration to the entire run periods, the integrated luminosities when CMS was fully operational are 2.27 and 36.3 fb-1 in 2015 and 2016, with a relative precision of 1.6 and 1.2%, respectively. These are among the most precise luminosity measurements at bunched-beam hadron colliders.",
journal = "European Physical Journal C. Particles and Fields",
title = "Precision luminosity measurement in proton–proton collisions at √s=13TeV in 2015 and 2016 at CMS",
volume = "81",
number = "9",
pages = "800",
doi = "10.1140/epjc/s10052-021-09538-2"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P., Milošević, J.,& Milošević, V.. (2021). Precision luminosity measurement in proton–proton collisions at √s=13TeV in 2015 and 2016 at CMS. in European Physical Journal C. Particles and Fields, 81(9), 800.
https://doi.org/10.1140/epjc/s10052-021-09538-2

Sirunyan AM, Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J, Milošević V. Precision luminosity measurement in proton–proton collisions at √s=13TeV in 2015 and 2016 at CMS. in European Physical Journal C. Particles and Fields. 2021;81(9):800.
doi:10.1140/epjc/s10052-021-09538-2 .

Sirunyan, A M, Tumasyan, A., Adam, W, Andrejkovic, J W, Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Milošević, Vukašin, "Precision luminosity measurement in proton–proton collisions at √s=13TeV in 2015 and 2016 at CMS" in European Physical Journal C. Particles and Fields, 81, no. 9 (2021):800,
https://doi.org/10.1140/epjc/s10052-021-09538-2 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J. W.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10045
AB  - A search is presented for lepton-flavor violating decays of the Higgs boson to μτ and eτ. The dataset corresponds to an integrated luminosity of 137 fb-1 collected at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV. No significant excess has been found, and the results are interpreted in terms of upper limits on lepton-flavor violating branching fractions of the Higgs boson. The observed (expected) upper limits on the branching fractions are, respectively, B(H→μτ)<0.15(0.15)% and B(H→eτ)<0.22(0.16)% at 95% confidence level.
T2  - Physical Review D
T1  - Search for lepton-flavor violating decays of the Higgs boson in the μτ and eτ final states in proton-proton collisions at s =13 TeV
VL  - 104
SP  - 032013
DO  - 10.1103/PhysRevD.104.032013
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Andrejkovic, J. W. and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "A search is presented for lepton-flavor violating decays of the Higgs boson to μτ and eτ. The dataset corresponds to an integrated luminosity of 137 fb-1 collected at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV. No significant excess has been found, and the results are interpreted in terms of upper limits on lepton-flavor violating branching fractions of the Higgs boson. The observed (expected) upper limits on the branching fractions are, respectively, B(H→μτ)<0.15(0.15)% and B(H→eτ)<0.22(0.16)% at 95% confidence level.",
journal = "Physical Review D",
title = "Search for lepton-flavor violating decays of the Higgs boson in the μτ and eτ final states in proton-proton collisions at s =13 TeV",
volume = "104",
pages = "032013",
doi = "10.1103/PhysRevD.104.032013"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Search for lepton-flavor violating decays of the Higgs boson in the μτ and eτ final states in proton-proton collisions at s =13 TeV. in Physical Review D, 104, 032013.
https://doi.org/10.1103/PhysRevD.104.032013

Sirunyan A, Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J. Search for lepton-flavor violating decays of the Higgs boson in the μτ and eτ final states in proton-proton collisions at s =13 TeV. in Physical Review D. 2021;104:032013.
doi:10.1103/PhysRevD.104.032013 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Search for lepton-flavor violating decays of the Higgs boson in the μτ and eτ final states in proton-proton collisions at s =13 TeV" in Physical Review D, 104 (2021):032013,
https://doi.org/10.1103/PhysRevD.104.032013 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J. W.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Milošević, Vukašin
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10044
AB  - A search for production of the supersymmetric partners of the top quark, top squarks, is presented. The search is based on proton-proton collision events containing multiple jets, no leptons, and large transverse momentum imbalance. 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 137  fb−1. The targeted signal production scenarios are direct and gluino-mediated top squark production, including scenarios in which the top squark and neutralino masses are nearly degenerate. The search utilizes novel algorithms based on deep neural networks that identify hadronically decaying top quarks and W bosons, which are expected in many of the targeted signal models. No statistically significant excess of events is observed relative to the expectation from the standard model, and limits on the top squark production cross section are obtained in the context of simplified supersymmetric models for various production and decay modes. Exclusion limits as high as 1310 GeV are established at the 95% confidence level on the mass of the top squark for direct top squark production models, and as high as 2260 GeV on the mass of the gluino for gluino-mediated top squark production models. These results represent a significant improvement over the results of previous searches for supersymmetry by CMS in the same final state.
T2  - Physical Review D
T1  - Search for top squark production in fully hadronic final states in proton-proton collisions at s=13  TeV
VL  - 104
SP  - 052001
DO  - 10.1103/PhysRevD.104.052001
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Andrejkovic, J. W. and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Milošević, Vukašin",
year = "2021",
abstract = "A search for production of the supersymmetric partners of the top quark, top squarks, is presented. The search is based on proton-proton collision events containing multiple jets, no leptons, and large transverse momentum imbalance. 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 137  fb−1. The targeted signal production scenarios are direct and gluino-mediated top squark production, including scenarios in which the top squark and neutralino masses are nearly degenerate. The search utilizes novel algorithms based on deep neural networks that identify hadronically decaying top quarks and W bosons, which are expected in many of the targeted signal models. No statistically significant excess of events is observed relative to the expectation from the standard model, and limits on the top squark production cross section are obtained in the context of simplified supersymmetric models for various production and decay modes. Exclusion limits as high as 1310 GeV are established at the 95% confidence level on the mass of the top squark for direct top squark production models, and as high as 2260 GeV on the mass of the gluino for gluino-mediated top squark production models. These results represent a significant improvement over the results of previous searches for supersymmetry by CMS in the same final state.",
journal = "Physical Review D",
title = "Search for top squark production in fully hadronic final states in proton-proton collisions at s=13  TeV",
volume = "104",
pages = "052001",
doi = "10.1103/PhysRevD.104.052001"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P., Milošević, J.,& Milošević, V.. (2021). Search for top squark production in fully hadronic final states in proton-proton collisions at s=13  TeV. in Physical Review D, 104, 052001.
https://doi.org/10.1103/PhysRevD.104.052001

Sirunyan A, Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J, Milošević V. Search for top squark production in fully hadronic final states in proton-proton collisions at s=13  TeV. in Physical Review D. 2021;104:052001.
doi:10.1103/PhysRevD.104.052001 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Milošević, Vukašin, "Search for top squark production in fully hadronic final states in proton-proton collisions at s=13  TeV" in Physical Review D, 104 (2021):052001,
https://doi.org/10.1103/PhysRevD.104.052001 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10043
AB  - The CMS experiment at the LHC has measured the differential cross sections of Z bosons decaying to pairs of leptons, as functions of transverse momentum and rapidity, in lead-lead collisions at a nucleon-nucleon center-of-mass energy of 5.02  TeV. The measured Z boson elliptic azimuthal anisotropy coefficient is compatible with zero, showing that Z bosons do not experience significant final-state interactions in the medium produced in the collision. Yields of Z bosons are compared to Glauber model predictions and are found to deviate from these expectations in peripheral collisions, indicating the presence of initial collision geometry and centrality selection effects. The precision of the measurement allows, for the first time, for a data-driven determination of the nucleon-nucleon integrated luminosity as a function of lead-lead centrality, thereby eliminating the need for its estimation based on a Glauber model.
T2  - Physical Review Letters
T1  - Constraints on the Initial State of Pb-Pb Collisions via Measurements of Z -Boson Yields and Azimuthal Anisotropy at sNN =5.02 TeV
VL  - 127
SP  - 102002
DO  - 10.1103/PhysRevLett.127.102002
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "The CMS experiment at the LHC has measured the differential cross sections of Z bosons decaying to pairs of leptons, as functions of transverse momentum and rapidity, in lead-lead collisions at a nucleon-nucleon center-of-mass energy of 5.02  TeV. The measured Z boson elliptic azimuthal anisotropy coefficient is compatible with zero, showing that Z bosons do not experience significant final-state interactions in the medium produced in the collision. Yields of Z bosons are compared to Glauber model predictions and are found to deviate from these expectations in peripheral collisions, indicating the presence of initial collision geometry and centrality selection effects. The precision of the measurement allows, for the first time, for a data-driven determination of the nucleon-nucleon integrated luminosity as a function of lead-lead centrality, thereby eliminating the need for its estimation based on a Glauber model.",
journal = "Physical Review Letters",
title = "Constraints on the Initial State of Pb-Pb Collisions via Measurements of Z -Boson Yields and Azimuthal Anisotropy at sNN =5.02 TeV",
volume = "127",
pages = "102002",
doi = "10.1103/PhysRevLett.127.102002"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Constraints on the Initial State of Pb-Pb Collisions via Measurements of Z -Boson Yields and Azimuthal Anisotropy at sNN =5.02 TeV. in Physical Review Letters, 127, 102002.
https://doi.org/10.1103/PhysRevLett.127.102002

Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J. Constraints on the Initial State of Pb-Pb Collisions via Measurements of Z -Boson Yields and Azimuthal Anisotropy at sNN =5.02 TeV. in Physical Review Letters. 2021;127:102002.
doi:10.1103/PhysRevLett.127.102002 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Constraints on the Initial State of Pb-Pb Collisions via Measurements of Z -Boson Yields and Azimuthal Anisotropy at sNN =5.02 TeV" in Physical Review Letters, 127 (2021):102002,
https://doi.org/10.1103/PhysRevLett.127.102002 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J. W.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Milošević, Vukašin
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10042
AB  - Many new physics models, including versions of supersymmetry characterized by R-parity violation (RPV), compressed mass spectra, long decay chains, or additional hidden sectors, predict the production of events with top quarks, low missing transverse momentum, and many additional quarks or gluons. The results of a search for new physics in events with two top quarks and additional jets are reported. The search is performed using events with at least seven jets and exactly one electron or muon. No requirement on missing transverse momentum is imposed. The study is based on a sample of proton-proton collisions at s=13TeV corresponding to 137  fb−1 of integrated luminosity collected with the CMS detector at the LHC in 2016–2018. The data are used to determine best fit values and upper limits on the cross section for pair production of top squarks in scenarios of RPV and stealth supersymmetry. Top squark masses up to 670 (870)  GeV are excluded at 95% confidence level for the RPV (stealth) scenario, and the maximum observed local signal significance is 2.8 standard deviations for the RPV scenario with top squark mass of 400  GeV.
T2  - Physical Review D
T1  - Search for top squarks in final states with two top quarks and several light-flavor jets in proton-proton collisions at s =13 TeV
VL  - 104
SP  - 032006
DO  - 10.1103/PhysRevD.104.032006
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Andrejkovic, J. W. and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Milošević, Vukašin",
year = "2021",
abstract = "Many new physics models, including versions of supersymmetry characterized by R-parity violation (RPV), compressed mass spectra, long decay chains, or additional hidden sectors, predict the production of events with top quarks, low missing transverse momentum, and many additional quarks or gluons. The results of a search for new physics in events with two top quarks and additional jets are reported. The search is performed using events with at least seven jets and exactly one electron or muon. No requirement on missing transverse momentum is imposed. The study is based on a sample of proton-proton collisions at s=13TeV corresponding to 137  fb−1 of integrated luminosity collected with the CMS detector at the LHC in 2016–2018. The data are used to determine best fit values and upper limits on the cross section for pair production of top squarks in scenarios of RPV and stealth supersymmetry. Top squark masses up to 670 (870)  GeV are excluded at 95% confidence level for the RPV (stealth) scenario, and the maximum observed local signal significance is 2.8 standard deviations for the RPV scenario with top squark mass of 400  GeV.",
journal = "Physical Review D",
title = "Search for top squarks in final states with two top quarks and several light-flavor jets in proton-proton collisions at s =13 TeV",
volume = "104",
pages = "032006",
doi = "10.1103/PhysRevD.104.032006"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P., Milošević, J.,& Milošević, V.. (2021). Search for top squarks in final states with two top quarks and several light-flavor jets in proton-proton collisions at s =13 TeV. in Physical Review D, 104, 032006.
https://doi.org/10.1103/PhysRevD.104.032006

Sirunyan A, Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J, Milošević V. Search for top squarks in final states with two top quarks and several light-flavor jets in proton-proton collisions at s =13 TeV. in Physical Review D. 2021;104:032006.
doi:10.1103/PhysRevD.104.032006 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Milošević, Vukašin, "Search for top squarks in final states with two top quarks and several light-flavor jets in proton-proton collisions at s =13 TeV" in Physical Review D, 104 (2021):032006,
https://doi.org/10.1103/PhysRevD.104.032006 . .

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Milošević, Vukašin
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10028
AB  - A search is presented for physics beyond the standard model (SM) using electron or muon pairs with high invariant mass. A data set of proton-proton collisions collected by the CMS experiment at the LHC at     s    $$ \sqrt{s} $$  = 13 TeV from 2016 to 2018 corresponding to a total integrated luminosity of up to 140 fb −1 is analyzed. No significant deviation is observed with respect to the SM background expectations. Upper limits are presented on the ratio of the product of the production cross section and the branching fraction to dileptons of a new narrow resonance to that of the Z boson. These provide the most stringent lower limits to date on the masses for various spin-1 particles, spin-2 gravitons in the Randall-Sundrum model, as well as spin-1 mediators between the SM and dark matter particles. Lower limits on the ultraviolet cutoff parameter are set both for four-fermion contact interactions and for the Arkani-Hamed, Dimopoulos, and Dvali model with large extra dimensions. Lepton flavor universality is tested at the TeV scale for the first time by comparing the dimuon and dielectron mass spectra. No significant deviation from the SM expectation of unity is observed.
T2  - Journal of High Energy Physics
T1  - Search for resonant and nonresonant new phenomena in high-mass dilepton final states at √s = 13 TeV
VL  - 2021
IS  - 7
SP  - 208
DO  - 10.1007/JHEP07(2021)208
ER  - 

@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Andrejkovic, J. and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Milošević, Vukašin",
year = "2021",
abstract = "A search is presented for physics beyond the standard model (SM) using electron or muon pairs with high invariant mass. A data set of proton-proton collisions collected by the CMS experiment at the LHC at     s    $$ \sqrt{s} $$  = 13 TeV from 2016 to 2018 corresponding to a total integrated luminosity of up to 140 fb −1 is analyzed. No significant deviation is observed with respect to the SM background expectations. Upper limits are presented on the ratio of the product of the production cross section and the branching fraction to dileptons of a new narrow resonance to that of the Z boson. These provide the most stringent lower limits to date on the masses for various spin-1 particles, spin-2 gravitons in the Randall-Sundrum model, as well as spin-1 mediators between the SM and dark matter particles. Lower limits on the ultraviolet cutoff parameter are set both for four-fermion contact interactions and for the Arkani-Hamed, Dimopoulos, and Dvali model with large extra dimensions. Lepton flavor universality is tested at the TeV scale for the first time by comparing the dimuon and dielectron mass spectra. No significant deviation from the SM expectation of unity is observed.",
journal = "Journal of High Energy Physics",
title = "Search for resonant and nonresonant new phenomena in high-mass dilepton final states at √s = 13 TeV",
volume = "2021",
number = "7",
pages = "208",
doi = "10.1007/JHEP07(2021)208"
}

Sirunyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P., Milošević, J.,& Milošević, V.. (2021). Search for resonant and nonresonant new phenomena in high-mass dilepton final states at √s = 13 TeV. in Journal of High Energy Physics, 2021(7), 208.
https://doi.org/10.1007/JHEP07(2021)208

Sirunyan A, Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J, Milošević V. Search for resonant and nonresonant new phenomena in high-mass dilepton final states at √s = 13 TeV. in Journal of High Energy Physics. 2021;2021(7):208.
doi:10.1007/JHEP07(2021)208 .

Sirunyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Milošević, Vukašin, "Search for resonant and nonresonant new phenomena in high-mass dilepton final states at √s = 13 TeV" in Journal of High Energy Physics, 2021, no. 7 (2021):208,
https://doi.org/10.1007/JHEP07(2021)208 . .

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10027
AB  - Measurements of Higgs boson production cross sections and couplings in events where the Higgs boson decays into a pair of photons are reported. Events are selected from a sample of proton-proton collisions at     s    $$ \sqrt{s} $$  = 13 TeV collected by the CMS detector at the LHC from 2016 to 2018, corresponding to an integrated luminosity of 137 fb −1. Analysis categories enriched in Higgs boson events produced via gluon fusion, vector boson fusion, vector boson associated production, and production associated with top quarks are constructed. The total Higgs boson signal strength, relative to the standard model (SM) prediction, is measured to be 1.12±0.09. Other properties of the Higgs boson are measured, including SM signal strength modifiers, production cross sections, and its couplings to other particles. These include the most precise measurements of gluon fusion and vector boson fusion Higgs boson production in several different kinematic regions, the first measurement of Higgs boson production in association with a top quark pair in five regions of the Higgs boson transverse momentum, and an upper limit on the rate of Higgs boson production in association with a single top quark. All results are found to be in agreement with the SM expectations.
T2  - Journal of High Energy Physics
T1  - Measurements of Higgs boson production cross sections and couplings in the diphoton decay channel at √s = 13 TeV
VL  - 2021
IS  - 7
SP  - 27
DO  - 10.1007/JHEP07(2021)027
ER  - 

@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Andrejkovic, J. and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "Measurements of Higgs boson production cross sections and couplings in events where the Higgs boson decays into a pair of photons are reported. Events are selected from a sample of proton-proton collisions at     s    $$ \sqrt{s} $$  = 13 TeV collected by the CMS detector at the LHC from 2016 to 2018, corresponding to an integrated luminosity of 137 fb −1. Analysis categories enriched in Higgs boson events produced via gluon fusion, vector boson fusion, vector boson associated production, and production associated with top quarks are constructed. The total Higgs boson signal strength, relative to the standard model (SM) prediction, is measured to be 1.12±0.09. Other properties of the Higgs boson are measured, including SM signal strength modifiers, production cross sections, and its couplings to other particles. These include the most precise measurements of gluon fusion and vector boson fusion Higgs boson production in several different kinematic regions, the first measurement of Higgs boson production in association with a top quark pair in five regions of the Higgs boson transverse momentum, and an upper limit on the rate of Higgs boson production in association with a single top quark. All results are found to be in agreement with the SM expectations.",
journal = "Journal of High Energy Physics",
title = "Measurements of Higgs boson production cross sections and couplings in the diphoton decay channel at √s = 13 TeV",
volume = "2021",
number = "7",
pages = "27",
doi = "10.1007/JHEP07(2021)027"
}

Sirunyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Measurements of Higgs boson production cross sections and couplings in the diphoton decay channel at √s = 13 TeV. in Journal of High Energy Physics, 2021(7), 27.
https://doi.org/10.1007/JHEP07(2021)027

Sirunyan A, Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J. Measurements of Higgs boson production cross sections and couplings in the diphoton decay channel at √s = 13 TeV. in Journal of High Energy Physics. 2021;2021(7):27.
doi:10.1007/JHEP07(2021)027 .

Sirunyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Measurements of Higgs boson production cross sections and couplings in the diphoton decay channel at √s = 13 TeV" in Journal of High Energy Physics, 2021, no. 7 (2021):27,
https://doi.org/10.1007/JHEP07(2021)027 . .

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10026
AB  - A search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector bosons, using proton–proton collisions at  $$\sqrt{s}=13\,{\text {TeV}} $$     s  = 13  TeV     at the LHC, is reported. The data sample corresponds to an integrated luminosity of 137 $$\,{\text {fb}}^{-1}$$       fb   - 1       collected with the CMS detector. Events are selected by requiring two or three electrons or muons, moderate missing transverse momentum, and two jets with a large rapidity separation and a large dijet mass. No excess of events with respect to the standard model background predictions is observed. Model independent upper limits at 95% confidence level are reported on the product of the cross section and branching fraction for vector boson fusion production of charged Higgs bosons as a function of mass, from 200 to 3000 $$\,{\text {GeV}}$$     GeV    . The results are interpreted in the context of the Georgi–Machacek model.
T2  - European Physical Journal C. Particles and Fields
T1  - Search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector boson pairs in proton–proton collisions at √s=13TeV
VL  - 81
IS  - 8
SP  - 723
DO  - 10.1140/epjc/s10052-021-09472-3
ER  - 

@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Andrejkovic, J. and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "A search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector bosons, using proton–proton collisions at  $$\sqrt{s}=13\,{\text {TeV}} $$     s  = 13  TeV     at the LHC, is reported. The data sample corresponds to an integrated luminosity of 137 $$\,{\text {fb}}^{-1}$$       fb   - 1       collected with the CMS detector. Events are selected by requiring two or three electrons or muons, moderate missing transverse momentum, and two jets with a large rapidity separation and a large dijet mass. No excess of events with respect to the standard model background predictions is observed. Model independent upper limits at 95% confidence level are reported on the product of the cross section and branching fraction for vector boson fusion production of charged Higgs bosons as a function of mass, from 200 to 3000 $$\,{\text {GeV}}$$     GeV    . The results are interpreted in the context of the Georgi–Machacek model.",
journal = "European Physical Journal C. Particles and Fields",
title = "Search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector boson pairs in proton–proton collisions at √s=13TeV",
volume = "81",
number = "8",
pages = "723",
doi = "10.1140/epjc/s10052-021-09472-3"
}

Sirunyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector boson pairs in proton–proton collisions at √s=13TeV. in European Physical Journal C. Particles and Fields, 81(8), 723.
https://doi.org/10.1140/epjc/s10052-021-09472-3

Sirunyan A, Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J. Search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector boson pairs in proton–proton collisions at √s=13TeV. in European Physical Journal C. Particles and Fields. 2021;81(8):723.
doi:10.1140/epjc/s10052-021-09472-3 .

Sirunyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector boson pairs in proton–proton collisions at √s=13TeV" in European Physical Journal C. Particles and Fields, 81, no. 8 (2021):723,
https://doi.org/10.1140/epjc/s10052-021-09472-3 . .

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Bergauer, T.
AU  - Dragicevic, M.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10025
AB  - A search is presented for a heavy vector reso- nance decaying into a Z boson and the standard model Higgs boson, where the Z boson is identified through its leptonic decays to electrons, muons, or neutrinos, and the Higgs boson is identified through its hadronic decays. The search is per- formed in a Lorentz-boosted regime and is based on data col- lected from 2016 to 2018 at the CERN LHC, corresponding to an integrated luminosity of 137 fb−1. Upper limits are derived on the production of a narrow heavy resonance Z′, and a mass below 3.5 and 3.7 TeV is excluded at 95% confidence level in models where the heavy vector boson couples predomi- nantly to fermions and to bosons, respectively. These are the most stringent limits placed on the Heavy Vector Triplet Z′ model to date. If the heavy vector boson couples exclusively to standard model bosons, upper limits on the product of the cross section and branching fraction are set between 23 and 0.3 fb for a Z′ mass between 0.8 and 4.6 TeV, respectively. This is the first limit set on a heavy vector boson coupling exclusively to standard model bosons in its production and decay.
T2  - European Physical Journal C. Particles and Fields
T1  - Search for a heavy vector resonance decaying to a Z boson and a Higgs boson in proton-proton collisions at √s=13Te
VL  - 81
IS  - 8
SP  - 688
DO  - 10.1140/epjc/s10052-021-09348-6
ER  - 

@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Bergauer, T. and Dragicevic, M. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "A search is presented for a heavy vector reso- nance decaying into a Z boson and the standard model Higgs boson, where the Z boson is identified through its leptonic decays to electrons, muons, or neutrinos, and the Higgs boson is identified through its hadronic decays. The search is per- formed in a Lorentz-boosted regime and is based on data col- lected from 2016 to 2018 at the CERN LHC, corresponding to an integrated luminosity of 137 fb−1. Upper limits are derived on the production of a narrow heavy resonance Z′, and a mass below 3.5 and 3.7 TeV is excluded at 95% confidence level in models where the heavy vector boson couples predomi- nantly to fermions and to bosons, respectively. These are the most stringent limits placed on the Heavy Vector Triplet Z′ model to date. If the heavy vector boson couples exclusively to standard model bosons, upper limits on the product of the cross section and branching fraction are set between 23 and 0.3 fb for a Z′ mass between 0.8 and 4.6 TeV, respectively. This is the first limit set on a heavy vector boson coupling exclusively to standard model bosons in its production and decay.",
journal = "European Physical Journal C. Particles and Fields",
title = "Search for a heavy vector resonance decaying to a Z boson and a Higgs boson in proton-proton collisions at √s=13Te",
volume = "81",
number = "8",
pages = "688",
doi = "10.1140/epjc/s10052-021-09348-6"
}

Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Search for a heavy vector resonance decaying to a Z boson and a Higgs boson in proton-proton collisions at √s=13Te. in European Physical Journal C. Particles and Fields, 81(8), 688.
https://doi.org/10.1140/epjc/s10052-021-09348-6

Sirunyan A, Tumasyan A, Adam W, Bergauer T, Dragicevic M, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J. Search for a heavy vector resonance decaying to a Z boson and a Higgs boson in proton-proton collisions at √s=13Te. in European Physical Journal C. Particles and Fields. 2021;81(8):688.
doi:10.1140/epjc/s10052-021-09348-6 .

Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Search for a heavy vector resonance decaying to a Z boson and a Higgs boson in proton-proton collisions at √s=13Te" in European Physical Journal C. Particles and Fields, 81, no. 8 (2021):688,
https://doi.org/10.1140/epjc/s10052-021-09348-6 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Andrejkovic, J.W.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Milošević, Vukašin
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10024
AB  - A search is performed for W′ bosons decaying to a top and a bottom quark in the all-hadronic final state, in proton-proton collisions at a center-of-mass energy of 13TeV. The analyzed data were collected by the CMS experiment between 2016 and 2018 and correspond to an integrated luminosity of 137fb−1. Deep neural network algorithms are used to identify the jet initiated by the bottom quark and the jet containing the decay products of the top quark when the W boson from the top quark decays hadronically. No excess above the estimated standard model background is observed. Upper limits on the production cross sections of W′ bosons decaying to a top and a bottom quark are set. Both left- and right-handed W′ bosons with masses below 3.4TeV are excluded at 95% confidence level, and the most stringent limits to date on W′ bosons decaying to a top and a bottom quark in the all-hadronic final state are obtained.
T2  - Physics Letters B
T1  - Search for W′ bosons decaying to a top and a bottom quark at s=13TeV in the hadronic final state
VL  - 820 C
SP  - 136535
DO  - 10.1016/j.physletb.2021.136535
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Andrejkovic, J.W. and Bergauer, T. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Milošević, Vukašin",
year = "2021",
abstract = "A search is performed for W′ bosons decaying to a top and a bottom quark in the all-hadronic final state, in proton-proton collisions at a center-of-mass energy of 13TeV. The analyzed data were collected by the CMS experiment between 2016 and 2018 and correspond to an integrated luminosity of 137fb−1. Deep neural network algorithms are used to identify the jet initiated by the bottom quark and the jet containing the decay products of the top quark when the W boson from the top quark decays hadronically. No excess above the estimated standard model background is observed. Upper limits on the production cross sections of W′ bosons decaying to a top and a bottom quark are set. Both left- and right-handed W′ bosons with masses below 3.4TeV are excluded at 95% confidence level, and the most stringent limits to date on W′ bosons decaying to a top and a bottom quark in the all-hadronic final state are obtained.",
journal = "Physics Letters B",
title = "Search for W′ bosons decaying to a top and a bottom quark at s=13TeV in the hadronic final state",
volume = "820 C",
pages = "136535",
doi = "10.1016/j.physletb.2021.136535"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Adžić, P., Đorđević, M., Milenović, P., Milošević, J.,& Milošević, V.. (2021). Search for W′ bosons decaying to a top and a bottom quark at s=13TeV in the hadronic final state. in Physics Letters B, 820 C, 136535.
https://doi.org/10.1016/j.physletb.2021.136535

Sirunyan AM, Tumasyan A, Adam W, Andrejkovic J, Bergauer T, Adžić P, Đorđević M, Milenović P, Milošević J, Milošević V. Search for W′ bosons decaying to a top and a bottom quark at s=13TeV in the hadronic final state. in Physics Letters B. 2021;820 C:136535.
doi:10.1016/j.physletb.2021.136535 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Milošević, Vukašin, "Search for W′ bosons decaying to a top and a bottom quark at s=13TeV in the hadronic final state" in Physics Letters B, 820 C (2021):136535,
https://doi.org/10.1016/j.physletb.2021.136535 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Bergauer, T.
AU  - Dragicevic, M.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10007
AB  - The first measurement of the inclusive cross section for top quark pairs (tt‾) produced in association with two additional charm jets is presented. The analysis uses the dileptonic final states of tt‾ events produced in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data correspond to an integrated luminosity of 41.5fb−1, recorded by the CMS experiment at the LHC. A new charm jet identification algorithm provides input to a neural network that is trained to distinguish among tt‾ events with two additional charm (tt‾cc‾), bottom (tt‾bb‾), and light-flavour or gluon (tt‾LL) jets. By means of a template fitting procedure, the inclusive tt‾cc‾, tt‾bb‾, and tt‾LL cross sections are simultaneously measured, together with their ratios to the inclusive tt‾ + two jets cross section. This provides measurements of the tt‾cc‾ and tt‾bb‾ cross sections of 10.1±1.2(stat)±1.4(syst)pb and 4.54±0.35(stat)±0.56(syst)pb, respectively, in the full phase space. The results are compared and found to be consistent with predictions from two different matrix element generators with next-to-leading order accuracy in quantum chromodynamics, interfaced with a parton shower simulation.
T2  - Physics Letters B
T1  - First measurement of the cross section for top quark pair production with additional charm jets using dileptonic final states in pp collisions at s=13TeV
VL  - 820 C
SP  - 136565
DO  - 10.1016/j.physletb.2021.136565
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Bergauer, T. and Dragicevic, M. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "The first measurement of the inclusive cross section for top quark pairs (tt‾) produced in association with two additional charm jets is presented. The analysis uses the dileptonic final states of tt‾ events produced in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data correspond to an integrated luminosity of 41.5fb−1, recorded by the CMS experiment at the LHC. A new charm jet identification algorithm provides input to a neural network that is trained to distinguish among tt‾ events with two additional charm (tt‾cc‾), bottom (tt‾bb‾), and light-flavour or gluon (tt‾LL) jets. By means of a template fitting procedure, the inclusive tt‾cc‾, tt‾bb‾, and tt‾LL cross sections are simultaneously measured, together with their ratios to the inclusive tt‾ + two jets cross section. This provides measurements of the tt‾cc‾ and tt‾bb‾ cross sections of 10.1±1.2(stat)±1.4(syst)pb and 4.54±0.35(stat)±0.56(syst)pb, respectively, in the full phase space. The results are compared and found to be consistent with predictions from two different matrix element generators with next-to-leading order accuracy in quantum chromodynamics, interfaced with a parton shower simulation.",
journal = "Physics Letters B",
title = "First measurement of the cross section for top quark pair production with additional charm jets using dileptonic final states in pp collisions at s=13TeV",
volume = "820 C",
pages = "136565",
doi = "10.1016/j.physletb.2021.136565"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). First measurement of the cross section for top quark pair production with additional charm jets using dileptonic final states in pp collisions at s=13TeV. in Physics Letters B, 820 C, 136565.
https://doi.org/10.1016/j.physletb.2021.136565

Sirunyan AM, Tumasyan A, Adam W, Bergauer T, Dragicevic M, Adžić P, Đorđević M, Milenović P, Milošević J. First measurement of the cross section for top quark pair production with additional charm jets using dileptonic final states in pp collisions at s=13TeV. in Physics Letters B. 2021;820 C:136565.
doi:10.1016/j.physletb.2021.136565 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "First measurement of the cross section for top quark pair production with additional charm jets using dileptonic final states in pp collisions at s=13TeV" in Physics Letters B, 820 C (2021):136565,
https://doi.org/10.1016/j.physletb.2021.136565 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Bergauer, T.
AU  - Dragicevic, M.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10006
AB  - The muon trigger system of the CMS experiment uses a combination of hardware and software to identify events containing a muon. During Run 2 (covering 2015-2018) the LHC achieved instantaneous luminosities as high as 2 × 10 cm s while delivering proton-proton collisions at √s = 13 TeV. The challenge for the trigger system of the CMS experiment is to reduce the registered event rate from about 40 MHz to about 1 kHz. Significant improvements important for the success of the CMS physics program have been made to the muon trigger system via improved muon reconstruction and identification algorithms since the end of Run 1 and throughout the Run 2 data-taking period. The new algorithms maintain the acceptance of the muon triggers at the same or even lower rate throughout the data-taking period despite the increasing number of additional proton-proton interactions in each LHC bunch crossing. In this paper, the algorithms used in 2015 and 2016 and their improvements throughout 2017 and 2018 are described. Measurements of the CMS muon trigger performance for this data-taking period are presented, including efficiencies, transverse momentum resolution, trigger rates, and the purity of the selected muon sample. This paper focuses on the single- and double-muon triggers with the lowest sustainable transverse momentum thresholds used by CMS. The efficiency is measured in a transverse momentum range from 8 to several hundred GeV.
T2  - Journal of Instrumentation
T1  - Performance of the CMS muon trigger system in proton-proton collisions at √s = 13 TeV
VL  - 16
IS  - 7
SP  - P07001
DO  - 10.1088/1748-0221/16/07/P07001
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Bergauer, T. and Dragicevic, M. and Adžić, Petar and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "The muon trigger system of the CMS experiment uses a combination of hardware and software to identify events containing a muon. During Run 2 (covering 2015-2018) the LHC achieved instantaneous luminosities as high as 2 × 10 cm s while delivering proton-proton collisions at √s = 13 TeV. The challenge for the trigger system of the CMS experiment is to reduce the registered event rate from about 40 MHz to about 1 kHz. Significant improvements important for the success of the CMS physics program have been made to the muon trigger system via improved muon reconstruction and identification algorithms since the end of Run 1 and throughout the Run 2 data-taking period. The new algorithms maintain the acceptance of the muon triggers at the same or even lower rate throughout the data-taking period despite the increasing number of additional proton-proton interactions in each LHC bunch crossing. In this paper, the algorithms used in 2015 and 2016 and their improvements throughout 2017 and 2018 are described. Measurements of the CMS muon trigger performance for this data-taking period are presented, including efficiencies, transverse momentum resolution, trigger rates, and the purity of the selected muon sample. This paper focuses on the single- and double-muon triggers with the lowest sustainable transverse momentum thresholds used by CMS. The efficiency is measured in a transverse momentum range from 8 to several hundred GeV.",
journal = "Journal of Instrumentation",
title = "Performance of the CMS muon trigger system in proton-proton collisions at √s = 13 TeV",
volume = "16",
number = "7",
pages = "P07001",
doi = "10.1088/1748-0221/16/07/P07001"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Performance of the CMS muon trigger system in proton-proton collisions at √s = 13 TeV. in Journal of Instrumentation, 16(7), P07001.
https://doi.org/10.1088/1748-0221/16/07/P07001

Sirunyan AM, Tumasyan A, Adam W, Bergauer T, Dragicevic M, Adžić P, Đorđević M, Milenović P, Milošević J. Performance of the CMS muon trigger system in proton-proton collisions at √s = 13 TeV. in Journal of Instrumentation. 2021;16(7):P07001.
doi:10.1088/1748-0221/16/07/P07001 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, Petar, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Performance of the CMS muon trigger system in proton-proton collisions at √s = 13 TeV" in Journal of Instrumentation, 16, no. 7 (2021):P07001,
https://doi.org/10.1088/1748-0221/16/07/P07001 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10005
AB  - The second-order Fourier coefficients (v2) characterizing the azimuthal distributions of Υ(1S)and Υ(2S)mesons produced in PbPb collisions at √sNN=5.02 TeV are studied. The Υmesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7nb−1. The scalar product method is used to extract the v2coefficients of the azimuthal distributions. Results are reported for the rapidity range |y| <2.4, in the transverse momentum interval 0 <pT<50 GeV/c, and in three centrality ranges of 10–30%, 30–50% and 50–90%. In contrast to the J/ψmesons, the measured v2values for the Υmesons are found to be consistent with zero.
T2  - Physics Letters B
T1  - Measurement of the azimuthal anisotropy of Υ(1S) and Υ(2S) mesons in PbPb collisions at √sNN=5.02 TeV
VL  - 819 C
SP  - 136385
DO  - 10.1016/j.physletb.2021.136385
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2021",
abstract = "The second-order Fourier coefficients (v2) characterizing the azimuthal distributions of Υ(1S)and Υ(2S)mesons produced in PbPb collisions at √sNN=5.02 TeV are studied. The Υmesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7nb−1. The scalar product method is used to extract the v2coefficients of the azimuthal distributions. Results are reported for the rapidity range |y| <2.4, in the transverse momentum interval 0 <pT<50 GeV/c, and in three centrality ranges of 10–30%, 30–50% and 50–90%. In contrast to the J/ψmesons, the measured v2values for the Υmesons are found to be consistent with zero.",
journal = "Physics Letters B",
title = "Measurement of the azimuthal anisotropy of Υ(1S) and Υ(2S) mesons in PbPb collisions at √sNN=5.02 TeV",
volume = "819 C",
pages = "136385",
doi = "10.1016/j.physletb.2021.136385"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M.. (2021). Measurement of the azimuthal anisotropy of Υ(1S) and Υ(2S) mesons in PbPb collisions at √sNN=5.02 TeV. in Physics Letters B, 819 C, 136385.
https://doi.org/10.1016/j.physletb.2021.136385

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Measurement of the azimuthal anisotropy of Υ(1S) and Υ(2S) mesons in PbPb collisions at √sNN=5.02 TeV. in Physics Letters B. 2021;819 C:136385.
doi:10.1016/j.physletb.2021.136385 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Stojanović, Milan, "Measurement of the azimuthal anisotropy of Υ(1S) and Υ(2S) mesons in PbPb collisions at √sNN=5.02 TeV" in Physics Letters B, 819 C (2021):136385,
https://doi.org/10.1016/j.physletb.2021.136385 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Bergauer, T.
AU  - Dragicevic, M.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10004
AB  - A search for leptoquarks produced singly and in pairs in proton-proton collisions is presented. We consider the leptoquark (LQ) to be a scalar particle of charge −1/3e coupling to a top quark plus a tau lepton (tτ) or a bottom quark plus a neutrino (bν), or a vector particle of charge +2/3e, coupling to tν or bτ. These choices are motivated by models that can explain a series of anomalies observed in the measurement of B meson decays. In this analysis the signatures tτνb and tτν are probed, using data recorded by the CMS experiment at the CERN LHC at s=13 TeV and that correspond to an integrated luminosity of 137 fb$^{−1}$. These signatures have not been previously explored in a dedicated search. The data are found to be in agreement with the standard model prediction. Lower limits at 95% confidence level are set on the LQ mass in the range 0.98–1.73 TeV, depending on the LQ spin and its coupling λ to a lepton and a quark, and assuming equal couplings for the two LQ decay modes considered. These are the most stringent constraints to date on the existence of leptoquarks in this scenario.
T2  - Physics Letters B
T1  - Search for singly and pair-produced leptoquarks coupling to third-generation fermions in proton-proton collisions at s=13 TeV
VL  - 819 C
SP  - 136446
DO  - 10.1016/j.physletb.2021.136446
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Bergauer, T. and Dragicevic, M. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "A search for leptoquarks produced singly and in pairs in proton-proton collisions is presented. We consider the leptoquark (LQ) to be a scalar particle of charge −1/3e coupling to a top quark plus a tau lepton (tτ) or a bottom quark plus a neutrino (bν), or a vector particle of charge +2/3e, coupling to tν or bτ. These choices are motivated by models that can explain a series of anomalies observed in the measurement of B meson decays. In this analysis the signatures tτνb and tτν are probed, using data recorded by the CMS experiment at the CERN LHC at s=13 TeV and that correspond to an integrated luminosity of 137 fb$^{−1}$. These signatures have not been previously explored in a dedicated search. The data are found to be in agreement with the standard model prediction. Lower limits at 95% confidence level are set on the LQ mass in the range 0.98–1.73 TeV, depending on the LQ spin and its coupling λ to a lepton and a quark, and assuming equal couplings for the two LQ decay modes considered. These are the most stringent constraints to date on the existence of leptoquarks in this scenario.",
journal = "Physics Letters B",
title = "Search for singly and pair-produced leptoquarks coupling to third-generation fermions in proton-proton collisions at s=13 TeV",
volume = "819 C",
pages = "136446",
doi = "10.1016/j.physletb.2021.136446"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Search for singly and pair-produced leptoquarks coupling to third-generation fermions in proton-proton collisions at s=13 TeV. in Physics Letters B, 819 C, 136446.
https://doi.org/10.1016/j.physletb.2021.136446

Sirunyan AM, Tumasyan A, Adam W, Bergauer T, Dragicevic M, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J. Search for singly and pair-produced leptoquarks coupling to third-generation fermions in proton-proton collisions at s=13 TeV. in Physics Letters B. 2021;819 C:136446.
doi:10.1016/j.physletb.2021.136446 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Search for singly and pair-produced leptoquarks coupling to third-generation fermions in proton-proton collisions at s=13 TeV" in Physics Letters B, 819 C (2021):136446,
https://doi.org/10.1016/j.physletb.2021.136446 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Bergauer, T.
AU  - Dragicevic, M.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10003
AB  - A search is performed for the rare decay W±→π±γ in proton-proton collisions at s=13TeV. Data corresponding to an integrated luminosity of 137fb−1 were collected during 2016 to 2018 with the CMS detector. This analysis exploits a novel search strategy based on W boson production in top quark pair events. An inclusive search for the W±→π±γ decay is not optimal at the LHC because of the high trigger thresholds. Instead, a trigger selection is exploited in which the W boson originating from one of the top quarks is used to tag the event in a leptonic decay. The W boson emerging from the other top quark is used to search for the W±→π±γ signature. Such decays are characterized by an isolated track pointing to a large energy deposit, and by an isolated photon of large transverse momentum. The presence of b quark jets reduces the background from the hadronization of light-flavor quarks and gluons. The W±→π±γ decay is not observed. An upper exclusion limit is set to this branching fraction, corresponding to 1.50×10−5 at 95% confidence level, whereas the expected upper exclusion limit is 0.85−0.29+0.52×10−5.
T2  - Physics Letters B
T1  - Search for the rare decay of the W boson into a pion and a photon in proton-proton collisions at √s=13 TeV
VL  - 819 C
SP  - 136409
DO  - 10.1016/j.physletb.2021.136409
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Bergauer, T. and Dragicevic, M. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "A search is performed for the rare decay W±→π±γ in proton-proton collisions at s=13TeV. Data corresponding to an integrated luminosity of 137fb−1 were collected during 2016 to 2018 with the CMS detector. This analysis exploits a novel search strategy based on W boson production in top quark pair events. An inclusive search for the W±→π±γ decay is not optimal at the LHC because of the high trigger thresholds. Instead, a trigger selection is exploited in which the W boson originating from one of the top quarks is used to tag the event in a leptonic decay. The W boson emerging from the other top quark is used to search for the W±→π±γ signature. Such decays are characterized by an isolated track pointing to a large energy deposit, and by an isolated photon of large transverse momentum. The presence of b quark jets reduces the background from the hadronization of light-flavor quarks and gluons. The W±→π±γ decay is not observed. An upper exclusion limit is set to this branching fraction, corresponding to 1.50×10−5 at 95% confidence level, whereas the expected upper exclusion limit is 0.85−0.29+0.52×10−5.",
journal = "Physics Letters B",
title = "Search for the rare decay of the W boson into a pion and a photon in proton-proton collisions at √s=13 TeV",
volume = "819 C",
pages = "136409",
doi = "10.1016/j.physletb.2021.136409"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). Search for the rare decay of the W boson into a pion and a photon in proton-proton collisions at √s=13 TeV. in Physics Letters B, 819 C, 136409.
https://doi.org/10.1016/j.physletb.2021.136409

Sirunyan AM, Tumasyan A, Adam W, Bergauer T, Dragicevic M, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J. Search for the rare decay of the W boson into a pion and a photon in proton-proton collisions at √s=13 TeV. in Physics Letters B. 2021;819 C:136409.
doi:10.1016/j.physletb.2021.136409 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Search for the rare decay of the W boson into a pion and a photon in proton-proton collisions at √s=13 TeV" in Physics Letters B, 819 C (2021):136409,
https://doi.org/10.1016/j.physletb.2021.136409 . .

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9988
AB  - Results of the Model Unspecific Search in CMS (MUSiC), using proton–proton collision data recorded at the LHC at a centre-of-mass energy of 13 $$\,\text {TeV}$$     TeV    , corresponding to an integrated luminosity of 35.9 $$\,\text {fb}^{-1}$$      fb  - 1      , are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.
T2  - European Physical Journal C. Particles and Fields
T1  - MUSiC: a model-unspecific search for new physics in proton–proton collisions at √s=13TeV
VL  - 81
IS  - 7
SP  - 629
DO  - 10.1140/epjc/s10052-021-09236-z
ER  - 

@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan",
year = "2021",
abstract = "Results of the Model Unspecific Search in CMS (MUSiC), using proton–proton collision data recorded at the LHC at a centre-of-mass energy of 13 $$\,\text {TeV}$$     TeV    , corresponding to an integrated luminosity of 35.9 $$\,\text {fb}^{-1}$$      fb  - 1      , are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.",
journal = "European Physical Journal C. Particles and Fields",
title = "MUSiC: a model-unspecific search for new physics in proton–proton collisions at √s=13TeV",
volume = "81",
number = "7",
pages = "629",
doi = "10.1140/epjc/s10052-021-09236-z"
}

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2021). MUSiC: a model-unspecific search for new physics in proton–proton collisions at √s=13TeV. in European Physical Journal C. Particles and Fields, 81(7), 629.
https://doi.org/10.1140/epjc/s10052-021-09236-z

Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J. MUSiC: a model-unspecific search for new physics in proton–proton collisions at √s=13TeV. in European Physical Journal C. Particles and Fields. 2021;81(7):629.
doi:10.1140/epjc/s10052-021-09236-z .

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "MUSiC: a model-unspecific search for new physics in proton–proton collisions at √s=13TeV" in European Physical Journal C. Particles and Fields, 81, no. 7 (2021):629,
https://doi.org/10.1140/epjc/s10052-021-09236-z . .