Adam, W.

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  • Adam, W. (10)
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Study of azimuthal anisotropy of Υ(1S) mesons in pPb collisions at √𝑠NN = 8.16 TeV

Tumasyan, A.; Adam, W.; Andrejkovic, J.; Bergauer, T.; Chatterjee, S.; Adžić, Petar; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan

(2024)

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 . .

Higher-order moments of the elliptic flow distribution in PbPb collisions at √sNN = 5.02 TeV

Tumasyan, A.; Adam, W.; Andrejkovic, J.; Bergauer, T.; Chatterjee, S.; Adžić, Petar; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Nađđerđ, Laslo

(2024)

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 . .

First measurement of large area jet transverse momentum spectra in heavy-ion collisions

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

(2021)

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 . .
6
18
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Precision luminosity measurement in proton–proton collisions at √s=13TeV in 2015 and 2016 at CMS

Sirunyan, A M; Tumasyan, A.; Adam, W; Andrejkovic, J W; Bergauer, T.; Adžić, Petar; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan; Milošević, Vukašin

(2021)

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 . .
2
88
7
120

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

Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Adžić, Petar; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan

(2021)

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 . .
3
6
10

Performance of the CMS muon trigger system in proton-proton collisions at √s = 13 TeV

Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Adžić, Petar; Đorđević, Miloš; Milenović, Predrag; Milošević, Jovan

(2021)

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 . .
2
4
9

Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at √s=13TeV

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

(2020)

TY  - JOUR
AU  - Sirunyan, A.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10142
AB  - The standard model (SM) production of four top quarks (t t ¯ t t ¯) in proton–proton collisions is studied by the CMS Collaboration. The data sample, collected during the 2016–2018 data taking of the LHC, corresponds to an integrated luminosity of 137fb-1 at a center-of-mass energy of 13TeV. The events are required to contain two same-sign charged leptons (electrons or muons) or at least three leptons, and jets. The observed and expected significances for the t t ¯ t t ¯ signal are respectively 2.6 and 2.7 standard deviations, and the t t ¯ t t ¯ cross section is measured to be 12.6-5.2+5.8fb. The results are used to constrain the Yukawa coupling of the top quark to the Higgs boson, yt, yielding a limit of |yt/ytSM|<1.7 at 95 % confidence level, where ytSM is the SM value of yt. They are also used to constrain the oblique parameter of the Higgs boson in an effective field theory framework, H^ < 0.12. Limits are set on the production of a heavy scalar or pseudoscalar boson in Type-II two-Higgs-doublet and simplified dark matter models, with exclusion limits reaching 350–470GeV and 350–550GeV for scalar and pseudoscalar bosons, respectively. Upper bounds are also set on couplings of the top quark to new light particles.
T2  - European Physical Journal C. Particles and Fields
T1  - Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at √s=13TeV
VL  - 80
IS  - 2
SP  - 75
DO  - 10.1140/epjc/s10052-019-7593-7
ER  - 
@article{
author = "Sirunyan, A. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
abstract = "The standard model (SM) production of four top quarks (t t ¯ t t ¯) in proton–proton collisions is studied by the CMS Collaboration. The data sample, collected during the 2016–2018 data taking of the LHC, corresponds to an integrated luminosity of 137fb-1 at a center-of-mass energy of 13TeV. The events are required to contain two same-sign charged leptons (electrons or muons) or at least three leptons, and jets. The observed and expected significances for the t t ¯ t t ¯ signal are respectively 2.6 and 2.7 standard deviations, and the t t ¯ t t ¯ cross section is measured to be 12.6-5.2+5.8fb. The results are used to constrain the Yukawa coupling of the top quark to the Higgs boson, yt, yielding a limit of |yt/ytSM|<1.7 at 95 % confidence level, where ytSM is the SM value of yt. They are also used to constrain the oblique parameter of the Higgs boson in an effective field theory framework, H^ < 0.12. Limits are set on the production of a heavy scalar or pseudoscalar boson in Type-II two-Higgs-doublet and simplified dark matter models, with exclusion limits reaching 350–470GeV and 350–550GeV for scalar and pseudoscalar bosons, respectively. Upper bounds are also set on couplings of the top quark to new light particles.",
journal = "European Physical Journal C. Particles and Fields",
title = "Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at √s=13TeV",
volume = "80",
number = "2",
pages = "75",
doi = "10.1140/epjc/s10052-019-7593-7"
}
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M.. (2020). Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at √s=13TeV. in European Physical Journal C. Particles and Fields, 80(2), 75.
https://doi.org/10.1140/epjc/s10052-019-7593-7
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at √s=13TeV. in European Physical Journal C. Particles and Fields. 2020;80(2):75.
doi:10.1140/epjc/s10052-019-7593-7 .
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Stojanović, Milan, "Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at √s=13TeV" in European Physical Journal C. Particles and Fields, 80, no. 2 (2020):75,
https://doi.org/10.1140/epjc/s10052-019-7593-7 . .
1
61
33
85

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

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

(2020)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10143
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 . .
4
38
26
79

Study of excited Λb0 states decaying to Λb0π+π− in proton-proton collisions at s=13TeV

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

(2020)

TY  - JOUR
AU  - Sirunyan, A.M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10144
AB  - A study of excited Λb0 baryons is reported, based on a data sample collected in 2016–2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140fb−1. The existence of four excited Λb0 states: Λb0(5912)0, Λb0(5920)0, Λb0(6146)0, and Λb0(6152)0 in the Λb0π+π− mass spectrum is confirmed, and their masses are measured. The Λb0π+π− mass distribution exhibits a broad excess of events in the region of 6040–6100 MeV, whose origin cannot be discerned with the present data.
T2  - Physics Letters B
T1  - Study of excited Λb0 states decaying to Λb0π+π− in proton-proton collisions at s=13TeV
VL  - 803 C
SP  - 135345
DO  - 10.1016/j.physletb.2020.135345
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 = "A study of excited Λb0 baryons is reported, based on a data sample collected in 2016–2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140fb−1. The existence of four excited Λb0 states: Λb0(5912)0, Λb0(5920)0, Λb0(6146)0, and Λb0(6152)0 in the Λb0π+π− mass spectrum is confirmed, and their masses are measured. The Λb0π+π− mass distribution exhibits a broad excess of events in the region of 6040–6100 MeV, whose origin cannot be discerned with the present data.",
journal = "Physics Letters B",
title = "Study of excited Λb0 states decaying to Λb0π+π− in proton-proton collisions at s=13TeV",
volume = "803 C",
pages = "135345",
doi = "10.1016/j.physletb.2020.135345"
}
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M.. (2020). Study of excited Λb0 states decaying to Λb0π+π− in proton-proton collisions at s=13TeV. in Physics Letters B, 803 C, 135345.
https://doi.org/10.1016/j.physletb.2020.135345
Sirunyan A, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Study of excited Λb0 states decaying to Λb0π+π− in proton-proton collisions at s=13TeV. in Physics Letters B. 2020;803 C:135345.
doi:10.1016/j.physletb.2020.135345 .
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Stojanović, Milan, "Study of excited Λb0 states decaying to Λb0π+π− in proton-proton collisions at s=13TeV" in Physics Letters B, 803 C (2020):135345,
https://doi.org/10.1016/j.physletb.2020.135345 . .
1
24
19
34

Pileup mitigation at CMS in 13 TeV data

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

(2020)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9779
AB  - With increasing instantaneous luminosity at the LHC come additional reconstruction challenges. At high luminosity, many collisions occur simultaneously within one proton-proton bunch crossing. The isolation of an interesting collision from the additional "pileup"collisions is needed for effective physics performance. In the CMS Collaboration, several techniques capable of mitigating the impact of these pileup collisions have been developed. Such methods include charged-hadron subtraction, pileup jet identification, isospin-based neutral particle "δβ"correction, and, most recently, pileup per particle identification. This paper surveys the performance of these techniques for jet and missing transverse momentum reconstruction, as well as muon isolation. The analysis makes use of data corresponding to 35.9 fb-1 collected with the CMS experiment in 2016 at a center-of-mass energy of 13 TeV. The performance of each algorithm is discussed for up to 70 simultaneous collisions per bunch crossing. Significant improvements are found in the identification of pileup jets, the jet energy, mass, and angular resolution, missing transverse momentum resolution, and muon isolation when using pileup per particle identification.
T2  - Journal of Instrumentation
T1  - Pileup mitigation at CMS in 13 TeV data
VL  - 15
IS  - 9
SP  - P09018
DO  - 10.1088/1748-0221/15/09/P09018
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 = "With increasing instantaneous luminosity at the LHC come additional reconstruction challenges. At high luminosity, many collisions occur simultaneously within one proton-proton bunch crossing. The isolation of an interesting collision from the additional "pileup"collisions is needed for effective physics performance. In the CMS Collaboration, several techniques capable of mitigating the impact of these pileup collisions have been developed. Such methods include charged-hadron subtraction, pileup jet identification, isospin-based neutral particle "δβ"correction, and, most recently, pileup per particle identification. This paper surveys the performance of these techniques for jet and missing transverse momentum reconstruction, as well as muon isolation. The analysis makes use of data corresponding to 35.9 fb-1 collected with the CMS experiment in 2016 at a center-of-mass energy of 13 TeV. The performance of each algorithm is discussed for up to 70 simultaneous collisions per bunch crossing. Significant improvements are found in the identification of pileup jets, the jet energy, mass, and angular resolution, missing transverse momentum resolution, and muon isolation when using pileup per particle identification.",
journal = "Journal of Instrumentation",
title = "Pileup mitigation at CMS in 13 TeV data",
volume = "15",
number = "9",
pages = "P09018",
doi = "10.1088/1748-0221/15/09/P09018"
}
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M.. (2020). Pileup mitigation at CMS in 13 TeV data. in Journal of Instrumentation, 15(9), P09018.
https://doi.org/10.1088/1748-0221/15/09/P09018
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Pileup mitigation at CMS in 13 TeV data. in Journal of Instrumentation. 2020;15(9):P09018.
doi:10.1088/1748-0221/15/09/P09018 .
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Stojanović, Milan, "Pileup mitigation at CMS in 13 TeV data" in Journal of Instrumentation, 15, no. 9 (2020):P09018,
https://doi.org/10.1088/1748-0221/15/09/P09018 . .
4
67
24
79

Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at √s = 13 TeV

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

(2020)

TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9783
AB  - A search for standard model Higgs bosons (H) produced with transverse momentum (p T) greater than 450 GeV and decaying to bottom quark-antiquark pairs (   b  b ¯    $$ \mathrm{b}\overline{\mathrm{b}} $$ ) is performed using proton-proton collision data collected by the CMS experiment at the LHC at     s    $$ \sqrt{s} $$  = 13 TeV. The data sample corresponds to an integrated luminosity of 137 fb −1. The search is inclusive in the Higgs boson production mode. Highly Lorentz-boosted Higgs bosons decaying to    b  b ¯    $$ \mathrm{b}\overline{\mathrm{b}} $$  are reconstructed as single large-radius jets, and are identified using jet substructure and a dedicated b tagging technique based on a deep neural network. The method is validated with Z →    b  b ¯    $$ \mathrm{b}\overline{\mathrm{b}} $$  decays. For a Higgs boson mass of 125 GeV, an excess of events above the background assuming no Higgs boson production is observed with a local significance of 2.5 standard deviations (σ), while the expectation is 0.7. The corresponding signal strength and local significance with respect to the standard model expectation are μ H = 3.7 ± 1.2(stat)      − 0.7   + 0.8     $$ {}_{-0.7}^{+0.8} $$ (syst)      − 0.5   + 0.8     $$ {}_{-0.5}^{+0.8} $$ (theo) and 1.9 σ. Additionally, an unfolded differential cross section as a function of Higgs boson p T for the gluon fusion production mode is presented, assuming the other production modes occur at the expected rates.
T2  - Journal of High Energy Physics
T1  - Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at √s = 13 TeV
VL  - 2020
IS  - 12
SP  - 85
DO  - 10.1007/JHEP12(2020)085
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 = "2020",
abstract = "A search for standard model Higgs bosons (H) produced with transverse momentum (p T) greater than 450 GeV and decaying to bottom quark-antiquark pairs (   b  b ¯    $$ \mathrm{b}\overline{\mathrm{b}} $$ ) is performed using proton-proton collision data collected by the CMS experiment at the LHC at     s    $$ \sqrt{s} $$  = 13 TeV. The data sample corresponds to an integrated luminosity of 137 fb −1. The search is inclusive in the Higgs boson production mode. Highly Lorentz-boosted Higgs bosons decaying to    b  b ¯    $$ \mathrm{b}\overline{\mathrm{b}} $$  are reconstructed as single large-radius jets, and are identified using jet substructure and a dedicated b tagging technique based on a deep neural network. The method is validated with Z →    b  b ¯    $$ \mathrm{b}\overline{\mathrm{b}} $$  decays. For a Higgs boson mass of 125 GeV, an excess of events above the background assuming no Higgs boson production is observed with a local significance of 2.5 standard deviations (σ), while the expectation is 0.7. The corresponding signal strength and local significance with respect to the standard model expectation are μ H = 3.7 ± 1.2(stat)      − 0.7   + 0.8     $$ {}_{-0.7}^{+0.8} $$ (syst)      − 0.5   + 0.8     $$ {}_{-0.5}^{+0.8} $$ (theo) and 1.9 σ. Additionally, an unfolded differential cross section as a function of Higgs boson p T for the gluon fusion production mode is presented, assuming the other production modes occur at the expected rates.",
journal = "Journal of High Energy Physics",
title = "Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at √s = 13 TeV",
volume = "2020",
number = "12",
pages = "85",
doi = "10.1007/JHEP12(2020)085"
}
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P.,& Milošević, J.. (2020). Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at √s = 13 TeV. in Journal of High Energy Physics, 2020(12), 85.
https://doi.org/10.1007/JHEP12(2020)085
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J. Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at √s = 13 TeV. in Journal of High Energy Physics. 2020;2020(12):85.
doi:10.1007/JHEP12(2020)085 .
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, "Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at √s = 13 TeV" in Journal of High Energy Physics, 2020, no. 12 (2020):85,
https://doi.org/10.1007/JHEP12(2020)085 . .
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