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. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10143
AB  - The first observation of the tt¯H process in a single Higgs boson decay channel with the full reconstruction of the final state (H→γγ) is presented, with a significance of 6.6 standard deviations (σ). The CP structure of Higgs boson couplings to fermions is measured, resulting in an exclusion of the pure CP-odd structure of the top Yukawa coupling at 3.2σ. The measurements are based on a sample of proton-proton collisions at a center-of-mass energy s=13  TeV collected by the CMS detector at the LHC, corresponding to an integrated luminosity of 137  fb−1. The cross section times branching fraction of the tt¯H process is measured to be σtt¯HBγγ=1.56−0.32+0.34  fb, which is compatible with the standard model prediction of 1.13−0.11+0.08  fb. The fractional contribution of the CP-odd component is measured to be fCPHtt=0.00±0.33.
T2  - Physical Review Letters
T1  - Measurements of tt¯H Production and the CP Structure of the Yukawa Interaction between the Higgs Boson and Top Quark in the Diphoton Decay Channel
VL  - 125
IS  - 6
SP  - 061801
DO  - 10.1103/PhysRevLett.125.061801
ER  - 

@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
abstract = "The first observation of the tt¯H process in a single Higgs boson decay channel with the full reconstruction of the final state (H→γγ) is presented, with a significance of 6.6 standard deviations (σ). The CP structure of Higgs boson couplings to fermions is measured, resulting in an exclusion of the pure CP-odd structure of the top Yukawa coupling at 3.2σ. The measurements are based on a sample of proton-proton collisions at a center-of-mass energy s=13  TeV collected by the CMS detector at the LHC, corresponding to an integrated luminosity of 137  fb−1. The cross section times branching fraction of the tt¯H process is measured to be σtt¯HBγγ=1.56−0.32+0.34  fb, which is compatible with the standard model prediction of 1.13−0.11+0.08  fb. The fractional contribution of the CP-odd component is measured to be fCPHtt=0.00±0.33.",
journal = "Physical Review Letters",
title = "Measurements of tt¯H Production and the CP Structure of the Yukawa Interaction between the Higgs Boson and Top Quark in the Diphoton Decay Channel",
volume = "125",
number = "6",
pages = "061801",
doi = "10.1103/PhysRevLett.125.061801"
}

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M.. (2020). Measurements of tt¯H Production and the CP Structure of the Yukawa Interaction between the Higgs Boson and Top Quark in the Diphoton Decay Channel. in Physical Review Letters, 125(6), 061801.
https://doi.org/10.1103/PhysRevLett.125.061801

Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Measurements of tt¯H Production and the CP Structure of the Yukawa Interaction between the Higgs Boson and Top Quark in the Diphoton Decay Channel. in Physical Review Letters. 2020;125(6):061801.
doi:10.1103/PhysRevLett.125.061801 .

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Stojanović, Milan, "Measurements of tt¯H Production and the CP Structure of the Yukawa Interaction between the Higgs Boson and Top Quark in the Diphoton Decay Channel" in Physical Review Letters, 125, no. 6 (2020):061801,
https://doi.org/10.1103/PhysRevLett.125.061801 . .

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Milenović, Predrag
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10985
AB  - A search for dark matter and unparticle production at the LHC has been performed using events containing two charged leptons (electrons or muons), consistent with the decay of a Z boson, and large missing transverse momentum. This study is based on data collected with the CMS detector in 2015, corresponding to an integrated luminosity of 2.3 fb−1 of proton-proton collisions at the LHC, at a center-of-mass energy of 13 TeV. No excess over the standard model expectation is observed. Compared to previous searches in this topology, which exclusively relied on effective field theories, the results are interpreted in terms of a simplified model of dark matter production for both vector and axial vector couplings between a mediator and dark matter particles. The first study of this class of models using CMS data at s=13 TeV is presented. Additionally, effective field theories of dark matter and unparticle production are used to interpret the data.[Figure not available: see fulltext.]
T2  - Journal of High Energy Physics
T1  - Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at √s=13 TeV
IS  - 3
SP  - 61
DO  - 10.1007/JHEP03(2017)061
ER  - 

@article{
author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Reković, Vladimir and Milenović, Predrag",
year = "2017",
abstract = "A search for dark matter and unparticle production at the LHC has been performed using events containing two charged leptons (electrons or muons), consistent with the decay of a Z boson, and large missing transverse momentum. This study is based on data collected with the CMS detector in 2015, corresponding to an integrated luminosity of 2.3 fb−1 of proton-proton collisions at the LHC, at a center-of-mass energy of 13 TeV. No excess over the standard model expectation is observed. Compared to previous searches in this topology, which exclusively relied on effective field theories, the results are interpreted in terms of a simplified model of dark matter production for both vector and axial vector couplings between a mediator and dark matter particles. The first study of this class of models using CMS data at s=13 TeV is presented. Additionally, effective field theories of dark matter and unparticle production are used to interpret the data.[Figure not available: see fulltext.]",
journal = "Journal of High Energy Physics",
title = "Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at √s=13 TeV",
number = "3",
pages = "61",
doi = "10.1007/JHEP03(2017)061"
}

Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Reković, V.,& Milenović, P.. (2017). Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at √s=13 TeV. in Journal of High Energy Physics(3), 61.
https://doi.org/10.1007/JHEP03(2017)061

Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Reković V, Milenović P. Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at √s=13 TeV. in Journal of High Energy Physics. 2017;(3):61.
doi:10.1007/JHEP03(2017)061 .

Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Reković, Vladimir, Milenović, Predrag, "Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at √s=13 TeV" in Journal of High Energy Physics, no. 3 (2017):61,
https://doi.org/10.1007/JHEP03(2017)061 . .