TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5951
T2  - Journal of High Energy Physics
T1  - Erratum: Search for anomalous production in the highly-boosted all-hadronic final state (vol 09, 029, 2012)
IS  - 3
DO  - 10.1007/JHEP03(2014)132
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
journal = "Journal of High Energy Physics",
title = "Erratum: Search for anomalous production in the highly-boosted all-hadronic final state (vol 09, 029, 2012)",
number = "3",
doi = "10.1007/JHEP03(2014)132"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Erratum: Search for anomalous production in the highly-boosted all-hadronic final state (vol 09, 029, 2012). in Journal of High Energy Physics(3).
https://doi.org/10.1007/JHEP03(2014)132

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Erratum: Search for anomalous production in the highly-boosted all-hadronic final state (vol 09, 029, 2012). in Journal of High Energy Physics. 2014;(3).
doi:10.1007/JHEP03(2014)132 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Erratum: Search for anomalous production in the highly-boosted all-hadronic final state (vol 09, 029, 2012)" in Journal of High Energy Physics, no. 3 (2014),
https://doi.org/10.1007/JHEP03(2014)132 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5933
AB  - The first measurement of jet shapes, defined as the fractional transverse momentum radial distribution, for inclusive jets produced in heavy-ion collisions is presented. Data samples of PbPb and pp collisions, corresponding to integrated luminosities of 150 mu b(-1) and 5.3 pb(-1) respectively, were collected at a nucleon-nucleon centre-of-mass energy of root s(NN) = 2.76 TeV with the CMS detector at the LHC. The jets are reconstructed with the anti-k(T) algorithm with a distance parameter R = 0.3, and the jet shapes are measured for charged particles with transverse momentum P-T GT 1 GeV/c. The jet shapes measured in PbPb collisions in different collision centralities are compared to reference distributions based on the pp data. A centrality-dependent modification of the jet shapes is observed in the more central PbPb collisions, indicating a redistribution of the energy inside the jet cone. This measurement provides information about the parton shower mechanism in the hot and dense medium produced in heavy-ion collisions. (C) 2014 The Authors. Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV
VL  - 730
SP  - 243
EP  - 263
DO  - 10.1016/j.physletb.2014.01.042
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "The first measurement of jet shapes, defined as the fractional transverse momentum radial distribution, for inclusive jets produced in heavy-ion collisions is presented. Data samples of PbPb and pp collisions, corresponding to integrated luminosities of 150 mu b(-1) and 5.3 pb(-1) respectively, were collected at a nucleon-nucleon centre-of-mass energy of root s(NN) = 2.76 TeV with the CMS detector at the LHC. The jets are reconstructed with the anti-k(T) algorithm with a distance parameter R = 0.3, and the jet shapes are measured for charged particles with transverse momentum P-T GT 1 GeV/c. The jet shapes measured in PbPb collisions in different collision centralities are compared to reference distributions based on the pp data. A centrality-dependent modification of the jet shapes is observed in the more central PbPb collisions, indicating a redistribution of the energy inside the jet cone. This measurement provides information about the parton shower mechanism in the hot and dense medium produced in heavy-ion collisions. (C) 2014 The Authors. Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV",
volume = "730",
pages = "243-263",
doi = "10.1016/j.physletb.2014.01.042"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV. in Physics Letters B, 730, 243-263.
https://doi.org/10.1016/j.physletb.2014.01.042

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV. in Physics Letters B. 2014;730:243-263.
doi:10.1016/j.physletb.2014.01.042 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV" in Physics Letters B, 730 (2014):243-263,
https://doi.org/10.1016/j.physletb.2014.01.042 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5996
AB  - Measurements of W gamma and Z gamma production in proton-proton collisions at root s = 7 TeV are used to extract limits on anomalous triple gauge couplings. The results are based on data recorded by the CMS experiment at the LHC that correspond to an integrated luminosity of 5.0 fb(-1). The cross sections are measured for photon transverse momenta p(T)(gamma) GT 15 GeV, and for separations between photons and final-state charged leptons in the pseudorapidity-azimuthal plane of Delta R(l,gamma) GT 0.7 in l nu gamma and ll gamma final states, where l refers either to an electron or a muon. A dilepton invariant mass requirement of m(ll) GT 50 GeV is imposed for the Z gamma process. No deviations are observed relative to predictions from the standard model, and limits are set on anomalous WW gamma, ZZ gamma, and Z gamma gamma triple gauge couplings.
T2  - Physical Review D
T1  - Measurement of the W gamma and Z gamma inclusive cross sections in pp collisions at root s=7 TeV and limits on anomalous triple gauge boson couplings
VL  - 89
IS  - 9
DO  - 10.1103/PhysRevD.89.092005
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "Measurements of W gamma and Z gamma production in proton-proton collisions at root s = 7 TeV are used to extract limits on anomalous triple gauge couplings. The results are based on data recorded by the CMS experiment at the LHC that correspond to an integrated luminosity of 5.0 fb(-1). The cross sections are measured for photon transverse momenta p(T)(gamma) GT 15 GeV, and for separations between photons and final-state charged leptons in the pseudorapidity-azimuthal plane of Delta R(l,gamma) GT 0.7 in l nu gamma and ll gamma final states, where l refers either to an electron or a muon. A dilepton invariant mass requirement of m(ll) GT 50 GeV is imposed for the Z gamma process. No deviations are observed relative to predictions from the standard model, and limits are set on anomalous WW gamma, ZZ gamma, and Z gamma gamma triple gauge couplings.",
journal = "Physical Review D",
title = "Measurement of the W gamma and Z gamma inclusive cross sections in pp collisions at root s=7 TeV and limits on anomalous triple gauge boson couplings",
volume = "89",
number = "9",
doi = "10.1103/PhysRevD.89.092005"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Measurement of the W gamma and Z gamma inclusive cross sections in pp collisions at root s=7 TeV and limits on anomalous triple gauge boson couplings. in Physical Review D, 89(9).
https://doi.org/10.1103/PhysRevD.89.092005

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the W gamma and Z gamma inclusive cross sections in pp collisions at root s=7 TeV and limits on anomalous triple gauge boson couplings. in Physical Review D. 2014;89(9).
doi:10.1103/PhysRevD.89.092005 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the W gamma and Z gamma inclusive cross sections in pp collisions at root s=7 TeV and limits on anomalous triple gauge boson couplings" in Physical Review D, 89, no. 9 (2014),
https://doi.org/10.1103/PhysRevD.89.092005 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6000
AB  - A measurement of total and fiducial inclusive W and Z boson production cross sections in pp collisions at root s = 8 TeV is presented. Electron and muon final states are analyzed in a data sample collected with the CMS detector corresponding to an integrated luminosity of 18.2 +/- 0.5 pb(-1). The measured total inclusive cross sections times branching fractions are sigma(pp - GT WX) x B(W - GT l upsilon) = 12.21 +/- 0.03(stat) +/- 0.24(syst) +/- 0.32(lum) nb and sigma(pp - GT ZX) x B(Z - GT l(+)l(-)) = 1.15 +/- 0.01(stat) +/- 0.02(syst) +/- 0.03(lum) nb for the dilepton mass in the range of 60-120 GeV. The measured values agree with next-to-next-to-leading-order QCD cross section calculations. Ratios of cross sections are reported with a precision of 2%. This is the first measurement of inclusive W and Z boson production in proton-proton collisions at root s = 8 TeV.
T2  - Physical Review Letters
T1  - Measurement of Inclusive W and Z Boson Production Cross Sections in pp Collisions at root s=8 TeV
VL  - 112
IS  - 19
DO  - 10.1103/PhysRevLett.112.191802
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "A measurement of total and fiducial inclusive W and Z boson production cross sections in pp collisions at root s = 8 TeV is presented. Electron and muon final states are analyzed in a data sample collected with the CMS detector corresponding to an integrated luminosity of 18.2 +/- 0.5 pb(-1). The measured total inclusive cross sections times branching fractions are sigma(pp - GT WX) x B(W - GT l upsilon) = 12.21 +/- 0.03(stat) +/- 0.24(syst) +/- 0.32(lum) nb and sigma(pp - GT ZX) x B(Z - GT l(+)l(-)) = 1.15 +/- 0.01(stat) +/- 0.02(syst) +/- 0.03(lum) nb for the dilepton mass in the range of 60-120 GeV. The measured values agree with next-to-next-to-leading-order QCD cross section calculations. Ratios of cross sections are reported with a precision of 2%. This is the first measurement of inclusive W and Z boson production in proton-proton collisions at root s = 8 TeV.",
journal = "Physical Review Letters",
title = "Measurement of Inclusive W and Z Boson Production Cross Sections in pp Collisions at root s=8 TeV",
volume = "112",
number = "19",
doi = "10.1103/PhysRevLett.112.191802"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Measurement of Inclusive W and Z Boson Production Cross Sections in pp Collisions at root s=8 TeV. in Physical Review Letters, 112(19).
https://doi.org/10.1103/PhysRevLett.112.191802

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of Inclusive W and Z Boson Production Cross Sections in pp Collisions at root s=8 TeV. in Physical Review Letters. 2014;112(19).
doi:10.1103/PhysRevLett.112.191802 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of Inclusive W and Z Boson Production Cross Sections in pp Collisions at root s=8 TeV" in Physical Review Letters, 112, no. 19 (2014),
https://doi.org/10.1103/PhysRevLett.112.191802 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6014
AB  - Measurements are presented of the associated production of a W boson and a charm-quark jet (W + c) in pp collisions at a center-of-mass energy of 7 TeV. The analysis is conducted with a data sample corresponding to a total integrated luminosity of 5 fb(-1), collected by the CMS detector at the LHC. W boson candidates are identified by their decay into a charged lepton (muon or electron) and a neutrino. The W + c measurements are performed for charm-quark jets in the kinematic region p(T)(jet) GT 25 GeV, vertical bar eta(jet)vertical bar LT 2.5, for two different thresholds for the transverse momentum of the lepton from the W-boson decay, and in the pseudorapidity range eta(l) LT 2.1. Hadronic and inclusive semileptonic decays of charm hadrons are used to measure the following total cross sections: sigma(pp - GT W + c + X) x B (W - GT lv) = 107.7 +/- 3.3 (stat.) +/- 6.9 (syst.) pb (p(T)(l) GT 25 GeV) and sigma (pp - GT W + c + X) x B (W - GT lv) = 84.1 +/- 2.0 (stat.) +/- 4.9 (syst.) pb (p(T)(l) GT 35 GeV), and the cross section ratios sigma(pp - GT W+ + (c) over bar + X)/sigma(pp - GT W- + c + X) = 0.954 +/- 0.025 (stat.) +/- 0.004 (syst.) (p(T)(l) GT 25 GeV) and sigma(pp - GT W+ + (c) over bar + X)/sigma(pp - GT W- + c + X) = 0.938 +/- 0.019 (stat.) +/- 0.006 (syst.) (p(T)(l) GT 35 GeV). Cross sections and cross section ratios are also measured differentially with respect to the absolute value of the pseudorapidity of the lepton from the W-boson decay. These are the first measurements from the LHC directly sensitive to the strange quark and antiquark content of the proton. Results are compared with theoretical predictions and are consistent with the predictions based on global fits of parton distribution functions.
T2  - Journal of High Energy Physics
T1  - Measurement of associated W plus charm production in pp collisions at root s=7 TeV
IS  - 2
DO  - 10.1007/JHEP02(2014)013
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "Measurements are presented of the associated production of a W boson and a charm-quark jet (W + c) in pp collisions at a center-of-mass energy of 7 TeV. The analysis is conducted with a data sample corresponding to a total integrated luminosity of 5 fb(-1), collected by the CMS detector at the LHC. W boson candidates are identified by their decay into a charged lepton (muon or electron) and a neutrino. The W + c measurements are performed for charm-quark jets in the kinematic region p(T)(jet) GT 25 GeV, vertical bar eta(jet)vertical bar LT 2.5, for two different thresholds for the transverse momentum of the lepton from the W-boson decay, and in the pseudorapidity range eta(l) LT 2.1. Hadronic and inclusive semileptonic decays of charm hadrons are used to measure the following total cross sections: sigma(pp - GT W + c + X) x B (W - GT lv) = 107.7 +/- 3.3 (stat.) +/- 6.9 (syst.) pb (p(T)(l) GT 25 GeV) and sigma (pp - GT W + c + X) x B (W - GT lv) = 84.1 +/- 2.0 (stat.) +/- 4.9 (syst.) pb (p(T)(l) GT 35 GeV), and the cross section ratios sigma(pp - GT W+ + (c) over bar + X)/sigma(pp - GT W- + c + X) = 0.954 +/- 0.025 (stat.) +/- 0.004 (syst.) (p(T)(l) GT 25 GeV) and sigma(pp - GT W+ + (c) over bar + X)/sigma(pp - GT W- + c + X) = 0.938 +/- 0.019 (stat.) +/- 0.006 (syst.) (p(T)(l) GT 35 GeV). Cross sections and cross section ratios are also measured differentially with respect to the absolute value of the pseudorapidity of the lepton from the W-boson decay. These are the first measurements from the LHC directly sensitive to the strange quark and antiquark content of the proton. Results are compared with theoretical predictions and are consistent with the predictions based on global fits of parton distribution functions.",
journal = "Journal of High Energy Physics",
title = "Measurement of associated W plus charm production in pp collisions at root s=7 TeV",
number = "2",
doi = "10.1007/JHEP02(2014)013"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Measurement of associated W plus charm production in pp collisions at root s=7 TeV. in Journal of High Energy Physics(2).
https://doi.org/10.1007/JHEP02(2014)013

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of associated W plus charm production in pp collisions at root s=7 TeV. in Journal of High Energy Physics. 2014;(2).
doi:10.1007/JHEP02(2014)013 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of associated W plus charm production in pp collisions at root s=7 TeV" in Journal of High Energy Physics, no. 2 (2014),
https://doi.org/10.1007/JHEP02(2014)013 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6031
AB  - Spectra of identified charged hadrons are measured in pPb collisions with the CMS detector at the LHC at . Charged pions, kaons, and protons in the transverse-momentum range -1.7 and laboratory rapidity are identified via their energy loss in the silicon tracker. The average increases with particle mass and the charged multiplicity of the event. The increase of the average with charged multiplicity is greater for heavier hadrons. Comparisons to Monte Carlo event generators reveal that Epos Lhc, which incorporates additional hydrodynamic evolution of the created system, is able to reproduce most of the data features, unlike Hijing and Ampt. The spectra and integrated yields are also compared to those measured in pp and PbPb collisions at various energies. The average transverse momentum and particle ratio measurements indicate that particle production at LHC energies is strongly correlated with event particle multiplicity.
T2  - European Physical Journal C. Particles and Fields
T1  - Study of the production of charged pions, kaons, and protons in pPb collisions at root SNN=5.02 TeV
VL  - 74
IS  - 6
DO  - 10.1140/epjc/s10052-014-2847-x
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "Spectra of identified charged hadrons are measured in pPb collisions with the CMS detector at the LHC at . Charged pions, kaons, and protons in the transverse-momentum range -1.7 and laboratory rapidity are identified via their energy loss in the silicon tracker. The average increases with particle mass and the charged multiplicity of the event. The increase of the average with charged multiplicity is greater for heavier hadrons. Comparisons to Monte Carlo event generators reveal that Epos Lhc, which incorporates additional hydrodynamic evolution of the created system, is able to reproduce most of the data features, unlike Hijing and Ampt. The spectra and integrated yields are also compared to those measured in pp and PbPb collisions at various energies. The average transverse momentum and particle ratio measurements indicate that particle production at LHC energies is strongly correlated with event particle multiplicity.",
journal = "European Physical Journal C. Particles and Fields",
title = "Study of the production of charged pions, kaons, and protons in pPb collisions at root SNN=5.02 TeV",
volume = "74",
number = "6",
doi = "10.1140/epjc/s10052-014-2847-x"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Study of the production of charged pions, kaons, and protons in pPb collisions at root SNN=5.02 TeV. in European Physical Journal C. Particles and Fields, 74(6).
https://doi.org/10.1140/epjc/s10052-014-2847-x

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Study of the production of charged pions, kaons, and protons in pPb collisions at root SNN=5.02 TeV. in European Physical Journal C. Particles and Fields. 2014;74(6).
doi:10.1140/epjc/s10052-014-2847-x .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Study of the production of charged pions, kaons, and protons in pPb collisions at root SNN=5.02 TeV" in European Physical Journal C. Particles and Fields, 74, no. 6 (2014),
https://doi.org/10.1140/epjc/s10052-014-2847-x . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6038
AB  - A study of color coherence effects in pp collisions at a center-of-mass energy of 7 is presented. The data used in the analysis were collected in 2010 with the CMS detector at the LHC and correspond to an integrated luminosity of 36 pb. Events are selected that contain at least three jets and where the two jets with the largest transverse momentum exhibit a back-to-back topology. The measured angular correlation between the second- and third-leading jet is shown to be sensitive to color coherence effects, and is compared to the predictions of Monte Carlo models with various implementations of color coherence. None of the models describe the data satisfactorily.
T2  - European Physical Journal C. Particles and Fields
T1  - Probing color coherence effects in pp collisions at root s=7 TeV
VL  - 74
IS  - 6
DO  - 10.1140/epjc/s10052-014-2901-8
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "A study of color coherence effects in pp collisions at a center-of-mass energy of 7 is presented. The data used in the analysis were collected in 2010 with the CMS detector at the LHC and correspond to an integrated luminosity of 36 pb. Events are selected that contain at least three jets and where the two jets with the largest transverse momentum exhibit a back-to-back topology. The measured angular correlation between the second- and third-leading jet is shown to be sensitive to color coherence effects, and is compared to the predictions of Monte Carlo models with various implementations of color coherence. None of the models describe the data satisfactorily.",
journal = "European Physical Journal C. Particles and Fields",
title = "Probing color coherence effects in pp collisions at root s=7 TeV",
volume = "74",
number = "6",
doi = "10.1140/epjc/s10052-014-2901-8"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Probing color coherence effects in pp collisions at root s=7 TeV. in European Physical Journal C. Particles and Fields, 74(6).
https://doi.org/10.1140/epjc/s10052-014-2901-8

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Probing color coherence effects in pp collisions at root s=7 TeV. in European Physical Journal C. Particles and Fields. 2014;74(6).
doi:10.1140/epjc/s10052-014-2901-8 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Probing color coherence effects in pp collisions at root s=7 TeV" in European Physical Journal C. Particles and Fields, 74, no. 6 (2014),
https://doi.org/10.1140/epjc/s10052-014-2901-8 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6056
AB  - The production of a Z boson, decaying into two leptons and produced in association with one or more b jets, is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7 TeV. The data were recorded in 2011 with the CMS detector and correspond to an integrated luminosity of 5 fb(-1). The Z(ll) + b-jets cross sections (where ll = mu mu or ee) are measured separately for a Z boson produced with exactly one b jet and with at least two b jets. In addition, a cross section ratio is extracted for a Z boson produced with at least one b jet, relative to a Z boson produced with at least one jet. The measured cross sections are compared to various theoretical predictions, and the data favour the predictions in the five-flavour scheme, where b quarks are assumed massless. The kinematic properties of the reconstructed particles are compared with the predictions from the MadGraph event generator using the pythia parton shower simulation.
T2  - Journal of High Energy Physics
T1  - Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at root s=7 TeV
IS  - 6
DO  - 10.1007/JHEP06(2014)120
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "The production of a Z boson, decaying into two leptons and produced in association with one or more b jets, is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7 TeV. The data were recorded in 2011 with the CMS detector and correspond to an integrated luminosity of 5 fb(-1). The Z(ll) + b-jets cross sections (where ll = mu mu or ee) are measured separately for a Z boson produced with exactly one b jet and with at least two b jets. In addition, a cross section ratio is extracted for a Z boson produced with at least one b jet, relative to a Z boson produced with at least one jet. The measured cross sections are compared to various theoretical predictions, and the data favour the predictions in the five-flavour scheme, where b quarks are assumed massless. The kinematic properties of the reconstructed particles are compared with the predictions from the MadGraph event generator using the pythia parton shower simulation.",
journal = "Journal of High Energy Physics",
title = "Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at root s=7 TeV",
number = "6",
doi = "10.1007/JHEP06(2014)120"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at root s=7 TeV. in Journal of High Energy Physics(6).
https://doi.org/10.1007/JHEP06(2014)120

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at root s=7 TeV. in Journal of High Energy Physics. 2014;(6).
doi:10.1007/JHEP06(2014)120 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at root s=7 TeV" in Journal of High Energy Physics, no. 6 (2014),
https://doi.org/10.1007/JHEP06(2014)120 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6060
AB  - A search is performed for pair-produced spin-3/2 excited top quarks , each decaying to a top quark and a gluon. The search uses data collected with the CMS detector from pp collisions at a center-of-mass energy of = 8 TeV, selecting events that have a single isolated muon or electron, an imbalance in transverse momentum, and at least six jets, of which one must be compatible with originating from the fragmentation of a b quark. The data, corresponding to an integrated luminosity of 19.5 fb(-1), show no significant excess over standard model predictions, and provide a lower limit of 803 GeV at 95% confidence on the mass of the spin-3/2 t(*) quark in an extension of the Randall-Sundrum model, assuming a 100% branching fraction of its decay into a top quark and a gluon. This is the first search for a spin-3/2 excited top quark performed at the LHC.
T2  - Journal of High Energy Physics
T1  - Search for pair production of excited top quarks in the lepton plus jets final state
IS  - 6
DO  - 10.1007/JHEP06(2014)125
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "A search is performed for pair-produced spin-3/2 excited top quarks , each decaying to a top quark and a gluon. The search uses data collected with the CMS detector from pp collisions at a center-of-mass energy of = 8 TeV, selecting events that have a single isolated muon or electron, an imbalance in transverse momentum, and at least six jets, of which one must be compatible with originating from the fragmentation of a b quark. The data, corresponding to an integrated luminosity of 19.5 fb(-1), show no significant excess over standard model predictions, and provide a lower limit of 803 GeV at 95% confidence on the mass of the spin-3/2 t(*) quark in an extension of the Randall-Sundrum model, assuming a 100% branching fraction of its decay into a top quark and a gluon. This is the first search for a spin-3/2 excited top quark performed at the LHC.",
journal = "Journal of High Energy Physics",
title = "Search for pair production of excited top quarks in the lepton plus jets final state",
number = "6",
doi = "10.1007/JHEP06(2014)125"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Search for pair production of excited top quarks in the lepton plus jets final state. in Journal of High Energy Physics(6).
https://doi.org/10.1007/JHEP06(2014)125

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Search for pair production of excited top quarks in the lepton plus jets final state. in Journal of High Energy Physics. 2014;(6).
doi:10.1007/JHEP06(2014)125 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Search for pair production of excited top quarks in the lepton plus jets final state" in Journal of High Energy Physics, no. 6 (2014),
https://doi.org/10.1007/JHEP06(2014)125 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6069
AB  - A peaking structure in the J/psi phi mass spectrum near threshold is observed in B-+/- - GT J/psi phi K-+/- decays, produced in pp collisions at root s = 7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode of the J/psi, corresponds to an integrated luminosity of 5.2 fb(-1). Fitting the structure to an S-wave relativistic Breit-Wigner lineshape above a three-body phase-space nonresonant component gives a signal statistical significance exceeding five standard deviations. The fitted mass and width values are m = 4148.0 +/- 2.4 (stat.) +/- 6.3 (syst.) MeV and Gamma = 28(-11)(+15) (stat.) +/- 19 (syst.) MeV, respectively. Evidence for an additional peaking structure at higher J/psi phi mass is also reported. (C) 2014 The Authors. Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Observation of a peaking structure in the J/psi phi mass spectrum from B-+/- - GT J/psi phi K-+/- decays
VL  - 734
SP  - 261
EP  - 281
DO  - 10.1016/j.physletb.2014.05.055
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "A peaking structure in the J/psi phi mass spectrum near threshold is observed in B-+/- - GT J/psi phi K-+/- decays, produced in pp collisions at root s = 7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode of the J/psi, corresponds to an integrated luminosity of 5.2 fb(-1). Fitting the structure to an S-wave relativistic Breit-Wigner lineshape above a three-body phase-space nonresonant component gives a signal statistical significance exceeding five standard deviations. The fitted mass and width values are m = 4148.0 +/- 2.4 (stat.) +/- 6.3 (syst.) MeV and Gamma = 28(-11)(+15) (stat.) +/- 19 (syst.) MeV, respectively. Evidence for an additional peaking structure at higher J/psi phi mass is also reported. (C) 2014 The Authors. Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Observation of a peaking structure in the J/psi phi mass spectrum from B-+/- - GT J/psi phi K-+/- decays",
volume = "734",
pages = "261-281",
doi = "10.1016/j.physletb.2014.05.055"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Observation of a peaking structure in the J/psi phi mass spectrum from B-+/- - GT J/psi phi K-+/- decays. in Physics Letters B, 734, 261-281.
https://doi.org/10.1016/j.physletb.2014.05.055

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Observation of a peaking structure in the J/psi phi mass spectrum from B-+/- - GT J/psi phi K-+/- decays. in Physics Letters B. 2014;734:261-281.
doi:10.1016/j.physletb.2014.05.055 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Observation of a peaking structure in the J/psi phi mass spectrum from B-+/- - GT J/psi phi K-+/- decays" in Physics Letters B, 734 (2014):261-281,
https://doi.org/10.1016/j.physletb.2014.05.055 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5861
AB  - The inclusive cross section for top-quark pair production measured by the CMS experiment in protonproton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order with various parton distribution functions to determine the top-quark pole mass, m(t)(pole), or the strong coupling constant, alpha(S). With the parton distribution function set NNPDF2.3, a pole mass of 176.7(-3.4)(+3.8) GeV is obtained when constraining alpha(S) at the scale of the Z boson mass, m(Z), to the current world average. Alternatively, by constraining m(t)(pole) to the latest average from direct mass measurements, a value of alpha(S)(m(Z)) = 0.1151(-0.0032)(+0.0033) is extracted. This is the first determination of alpha(S) using events from top-quark production. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at root s=7 TeV
VL  - 728
SP  - 496
EP  - 517
DO  - 10.1016/j.physletb.2013.12.009
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "The inclusive cross section for top-quark pair production measured by the CMS experiment in protonproton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order with various parton distribution functions to determine the top-quark pole mass, m(t)(pole), or the strong coupling constant, alpha(S). With the parton distribution function set NNPDF2.3, a pole mass of 176.7(-3.4)(+3.8) GeV is obtained when constraining alpha(S) at the scale of the Z boson mass, m(Z), to the current world average. Alternatively, by constraining m(t)(pole) to the latest average from direct mass measurements, a value of alpha(S)(m(Z)) = 0.1151(-0.0032)(+0.0033) is extracted. This is the first determination of alpha(S) using events from top-quark production. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at root s=7 TeV",
volume = "728",
pages = "496-517",
doi = "10.1016/j.physletb.2013.12.009"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at root s=7 TeV. in Physics Letters B, 728, 496-517.
https://doi.org/10.1016/j.physletb.2013.12.009

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at root s=7 TeV. in Physics Letters B. 2014;728:496-517.
doi:10.1016/j.physletb.2013.12.009 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at root s=7 TeV" in Physics Letters B, 728 (2014):496-517,
https://doi.org/10.1016/j.physletb.2013.12.009 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5441
AB  - A measurement of the triple-differential cross section, , in photon + jets final states using a data sample from proton-proton collisions at = 7 TeV is presented. This sample corresponds to an integrated luminosity of 2.14 fb(-1) collected by the CMS detector at the LHC. Photons and jets are reconstructed within a pseudorapidity range of |eta| LT 2.5, and are required to have transverse momenta in the range 40 LT LT 300 GeV and GT 30 GeV, respectively. The measurements are compared to theoretical predictions from the sherpa leading-order QCD Monte Carlo event generator and the next-to-leading-order perturbative QCD calculation from jetphox. The predictions are found to be consistent with the data over most of the examined kinematic region.
T2  - Journal of High Energy Physics
T1  - Measurement of the triple-differential cross section for photon plus jets production in proton-proton collisions at=7 TeV
IS  - 6
DO  - 10.1007/JHEP06(2014)009
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "A measurement of the triple-differential cross section, , in photon + jets final states using a data sample from proton-proton collisions at = 7 TeV is presented. This sample corresponds to an integrated luminosity of 2.14 fb(-1) collected by the CMS detector at the LHC. Photons and jets are reconstructed within a pseudorapidity range of |eta| LT 2.5, and are required to have transverse momenta in the range 40 LT LT 300 GeV and GT 30 GeV, respectively. The measurements are compared to theoretical predictions from the sherpa leading-order QCD Monte Carlo event generator and the next-to-leading-order perturbative QCD calculation from jetphox. The predictions are found to be consistent with the data over most of the examined kinematic region.",
journal = "Journal of High Energy Physics",
title = "Measurement of the triple-differential cross section for photon plus jets production in proton-proton collisions at=7 TeV",
number = "6",
doi = "10.1007/JHEP06(2014)009"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Measurement of the triple-differential cross section for photon plus jets production in proton-proton collisions at=7 TeV. in Journal of High Energy Physics(6).
https://doi.org/10.1007/JHEP06(2014)009

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the triple-differential cross section for photon plus jets production in proton-proton collisions at=7 TeV. in Journal of High Energy Physics. 2014;(6).
doi:10.1007/JHEP06(2014)009 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the triple-differential cross section for photon plus jets production in proton-proton collisions at=7 TeV" in Journal of High Energy Physics, no. 6 (2014),
https://doi.org/10.1007/JHEP06(2014)009 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/433
AB  - The mass of the top quark is measured using a sample of t (t) over bar candidate events with at least six jets in the final state. The sample is selected from data collected with the CMS detector in pp collisions at root s = 7 TeV in 2011 and corresponds to an integrated luminosity of 3.54 fb(-1). The mass is reconstructed for each event employing a kinematic fit of the jets to a t (t) over bar hypothesis. The top-quark mass is measured to be 173.49 +/- 0.69 ( stat.) +/- 1.21 ( syst.) GeV. A combination with previously published measurements in other decay modes byCMSyields a mass of 173.54 +/- 0.33 (stat.) +/- 0.96 (syst.) GeV.
T2  - European Physical Journal C. Particles and Fields
T1  - Measurement of the top-quark mass in all-jets t(t)over-bar events in pp collisions at root s=7 TeV
VL  - 74
IS  - 4
DO  - 10.1140/epjc/s10052-014-2758-x
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2014",
abstract = "The mass of the top quark is measured using a sample of t (t) over bar candidate events with at least six jets in the final state. The sample is selected from data collected with the CMS detector in pp collisions at root s = 7 TeV in 2011 and corresponds to an integrated luminosity of 3.54 fb(-1). The mass is reconstructed for each event employing a kinematic fit of the jets to a t (t) over bar hypothesis. The top-quark mass is measured to be 173.49 +/- 0.69 ( stat.) +/- 1.21 ( syst.) GeV. A combination with previously published measurements in other decay modes byCMSyields a mass of 173.54 +/- 0.33 (stat.) +/- 0.96 (syst.) GeV.",
journal = "European Physical Journal C. Particles and Fields",
title = "Measurement of the top-quark mass in all-jets t(t)over-bar events in pp collisions at root s=7 TeV",
volume = "74",
number = "4",
doi = "10.1140/epjc/s10052-014-2758-x"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2014). Measurement of the top-quark mass in all-jets t(t)over-bar events in pp collisions at root s=7 TeV. in European Physical Journal C. Particles and Fields, 74(4).
https://doi.org/10.1140/epjc/s10052-014-2758-x

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the top-quark mass in all-jets t(t)over-bar events in pp collisions at root s=7 TeV. in European Physical Journal C. Particles and Fields. 2014;74(4).
doi:10.1140/epjc/s10052-014-2758-x .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the top-quark mass in all-jets t(t)over-bar events in pp collisions at root s=7 TeV" in European Physical Journal C. Particles and Fields, 74, no. 4 (2014),
https://doi.org/10.1140/epjc/s10052-014-2758-x . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5627
T2  - Journal of High Energy Physics
T1  - Erratum: search for new physics in events with same-sign dileptons and b jets in pp collisions at root s = 8 TeV (vol 3, pg 037, 2013)
IS  - 7
DO  - 10.1007/JHEP07(2013)041
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
journal = "Journal of High Energy Physics",
title = "Erratum: search for new physics in events with same-sign dileptons and b jets in pp collisions at root s = 8 TeV (vol 3, pg 037, 2013)",
number = "7",
doi = "10.1007/JHEP07(2013)041"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Erratum: search for new physics in events with same-sign dileptons and b jets in pp collisions at root s = 8 TeV (vol 3, pg 037, 2013). in Journal of High Energy Physics(7).
https://doi.org/10.1007/JHEP07(2013)041

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Erratum: search for new physics in events with same-sign dileptons and b jets in pp collisions at root s = 8 TeV (vol 3, pg 037, 2013). in Journal of High Energy Physics. 2013;(7).
doi:10.1007/JHEP07(2013)041 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Erratum: search for new physics in events with same-sign dileptons and b jets in pp collisions at root s = 8 TeV (vol 3, pg 037, 2013)" in Journal of High Energy Physics, no. 7 (2013),
https://doi.org/10.1007/JHEP07(2013)041 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5927
AB  - The first measurement of the electroweak production cross section of a Z boson with two jets (Zjj) in pp collisions at root s = 7 TeV is presented, based on a data sample recorded by the CMS experiment at the LHC with an integrated luminosity of 5 fb(-1). The cross section is measured for the lljj (l = e, mu) final state in the kinematic region m(ll) GT 50 GeV, m(jj) GT 120 GeV, transverse momenta p(T)(j) GT 25 GeV and pseudorapidity vertical bar eta(j)vertical bar LT 4.0. The measurement, combining the muon and electron channels, yields sigma = 154 +/- 24 (stat.) +/- 46 (exp. syst.) +/- 27 (th. syst.) +/- 3 (lum.) fb, in agreement with the theoretical cross section. The hadronic activity, in the rapidity interval between the jets, is also measured. These results establish an important foundation for the more general study of vector boson fusion processes, of relevance for Higgs boson searches and for measurements of electroweak gauge couplings and vector boson scattering.
T2  - Journal of High Energy Physics
T1  - Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at root s=7 TeV
IS  - 10
DO  - 10.1007/JHEP10(2013)062
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "The first measurement of the electroweak production cross section of a Z boson with two jets (Zjj) in pp collisions at root s = 7 TeV is presented, based on a data sample recorded by the CMS experiment at the LHC with an integrated luminosity of 5 fb(-1). The cross section is measured for the lljj (l = e, mu) final state in the kinematic region m(ll) GT 50 GeV, m(jj) GT 120 GeV, transverse momenta p(T)(j) GT 25 GeV and pseudorapidity vertical bar eta(j)vertical bar LT 4.0. The measurement, combining the muon and electron channels, yields sigma = 154 +/- 24 (stat.) +/- 46 (exp. syst.) +/- 27 (th. syst.) +/- 3 (lum.) fb, in agreement with the theoretical cross section. The hadronic activity, in the rapidity interval between the jets, is also measured. These results establish an important foundation for the more general study of vector boson fusion processes, of relevance for Higgs boson searches and for measurements of electroweak gauge couplings and vector boson scattering.",
journal = "Journal of High Energy Physics",
title = "Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at root s=7 TeV",
number = "10",
doi = "10.1007/JHEP10(2013)062"
}

Chatrchyan, S., Adžić, P., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at root s=7 TeV. in Journal of High Energy Physics(10).
https://doi.org/10.1007/JHEP10(2013)062

Chatrchyan S, Adžić P, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at root s=7 TeV. in Journal of High Energy Physics. 2013;(10).
doi:10.1007/JHEP10(2013)062 .

Chatrchyan, S., Adžić, Petar, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at root s=7 TeV" in Journal of High Energy Physics, no. 10 (2013),
https://doi.org/10.1007/JHEP10(2013)062 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5907
AB  - A measurement is presented of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section as a function of the average transverse momentum, LT p(T1,2) GT , of the two leading jets in the event. The data sample was collected during 2011 at a proton-proton centre-of-mass energy of 7 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 5.0 fb(-1). The strong coupling constant at the scale of the Z boson mass is determined to be alpha(S)(M-Z) = 0.1148 +/- 0.0014 (exp.) +/- 0.0018 (PDF) +/- 0.0050 (theory), by comparing the ratio in the range 0.42 LT LT p(T1,2) GT LT 1.39 TeV to the predictions of perturbative QCD at next-to-leading order. This is the first determination of alpha(S)(M-Z) from measurements at momentum scales beyond 0.6 TeV. The predicted ratio depends only indirectly on the evolution of the parton distribution functions of the proton such that this measurement also serves as a test of the evolution of the strong coupling constant. No deviation from the expected behaviour is observed.
T2  - European Physical Journal C. Particles and Fields
T1  - Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at root s=7 TeV and first determination of the strong coupling constant in the TeV range
VL  - 73
IS  - 10
DO  - 10.1140/epjc/s10052-013-2604-6
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "A measurement is presented of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section as a function of the average transverse momentum, LT p(T1,2) GT , of the two leading jets in the event. The data sample was collected during 2011 at a proton-proton centre-of-mass energy of 7 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 5.0 fb(-1). The strong coupling constant at the scale of the Z boson mass is determined to be alpha(S)(M-Z) = 0.1148 +/- 0.0014 (exp.) +/- 0.0018 (PDF) +/- 0.0050 (theory), by comparing the ratio in the range 0.42 LT LT p(T1,2) GT LT 1.39 TeV to the predictions of perturbative QCD at next-to-leading order. This is the first determination of alpha(S)(M-Z) from measurements at momentum scales beyond 0.6 TeV. The predicted ratio depends only indirectly on the evolution of the parton distribution functions of the proton such that this measurement also serves as a test of the evolution of the strong coupling constant. No deviation from the expected behaviour is observed.",
journal = "European Physical Journal C. Particles and Fields",
title = "Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at root s=7 TeV and first determination of the strong coupling constant in the TeV range",
volume = "73",
number = "10",
doi = "10.1140/epjc/s10052-013-2604-6"
}

Chatrchyan, S., Adžić, P., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at root s=7 TeV and first determination of the strong coupling constant in the TeV range. in European Physical Journal C. Particles and Fields, 73(10).
https://doi.org/10.1140/epjc/s10052-013-2604-6

Chatrchyan S, Adžić P, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at root s=7 TeV and first determination of the strong coupling constant in the TeV range. in European Physical Journal C. Particles and Fields. 2013;73(10).
doi:10.1140/epjc/s10052-013-2604-6 .

Chatrchyan, S., Adžić, Petar, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at root s=7 TeV and first determination of the strong coupling constant in the TeV range" in European Physical Journal C. Particles and Fields, 73, no. 10 (2013),
https://doi.org/10.1140/epjc/s10052-013-2604-6 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5823
AB  - The performance of all subsystems of the CMS muon detector has been studied by using a sample of proton-proton collision data at root s = 7TeV collected at the LHC in 2010 that corresponds to an integrated luminosity of approximately 40 pb(-1). The measured distributions of the major operational parameters of the drift tube (DT), cathode strip chamber (CSC), and resistive plate chamber (RPC) systems met the design specifications. The spatial resolution per chamber was 80-120 mu m in the DTs, 40-150 mu m in the CSCs, and 0.8-1.2 cm in the RPCs. The time resolution achievable was 3 ns or better per chamber for all 3 systems. The efficiency for reconstructing hits and track segments originating from muons traversing the muon chambers was in the range 95-98%. The CSC and DT systems provided muon track segments for the CMS trigger with over 96% efficiency, and identified the correct triggering bunch crossing in over 99.5% of such events. The measured performance is well reproduced by Monte Carlo simulation of the muon system down to the level of individual channel response. The results confirm the high efficiency of the muon system, the robustness of the design against hardware failures, and its effectiveness in the discrimination of backgrounds.
T2  - Journal of Instrumentation
T1  - The performance of the CMS muon detector in proton-proton collisions at root s=7 TeV at the LHC
VL  - 8
DO  - 10.1088/1748-0221/8/11/P11002
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "The performance of all subsystems of the CMS muon detector has been studied by using a sample of proton-proton collision data at root s = 7TeV collected at the LHC in 2010 that corresponds to an integrated luminosity of approximately 40 pb(-1). The measured distributions of the major operational parameters of the drift tube (DT), cathode strip chamber (CSC), and resistive plate chamber (RPC) systems met the design specifications. The spatial resolution per chamber was 80-120 mu m in the DTs, 40-150 mu m in the CSCs, and 0.8-1.2 cm in the RPCs. The time resolution achievable was 3 ns or better per chamber for all 3 systems. The efficiency for reconstructing hits and track segments originating from muons traversing the muon chambers was in the range 95-98%. The CSC and DT systems provided muon track segments for the CMS trigger with over 96% efficiency, and identified the correct triggering bunch crossing in over 99.5% of such events. The measured performance is well reproduced by Monte Carlo simulation of the muon system down to the level of individual channel response. The results confirm the high efficiency of the muon system, the robustness of the design against hardware failures, and its effectiveness in the discrimination of backgrounds.",
journal = "Journal of Instrumentation",
title = "The performance of the CMS muon detector in proton-proton collisions at root s=7 TeV at the LHC",
volume = "8",
doi = "10.1088/1748-0221/8/11/P11002"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). The performance of the CMS muon detector in proton-proton collisions at root s=7 TeV at the LHC. in Journal of Instrumentation, 8.
https://doi.org/10.1088/1748-0221/8/11/P11002

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. The performance of the CMS muon detector in proton-proton collisions at root s=7 TeV at the LHC. in Journal of Instrumentation. 2013;8.
doi:10.1088/1748-0221/8/11/P11002 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "The performance of the CMS muon detector in proton-proton collisions at root s=7 TeV at the LHC" in Journal of Instrumentation, 8 (2013),
https://doi.org/10.1088/1748-0221/8/11/P11002 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5816
AB  - Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at root s = 7 TeV, correspond to an integrated luminosity of 5.0 fb(-1). The individual rapidity distributions of the boson and the jet are consistent within 5% with expectations from perturbative QCD. However, QCD predictions for the sum and the difference in rapidities of the two final-state objects show discrepancies with CMS data. In particular, next-to-leading-order QCD calculations, and two common Monte Carlo event generators using different methods to match matrix-element partons with parton showers, appear inconsistent with the data as well as with each other.
T2  - Physical Review D
T1  - Rapidity distributions in exclusive Z plus jet and gamma plus jet events in pp collisions at root s=7 TeV
VL  - 88
IS  - 11
DO  - 10.1103/PhysRevD.88.112009
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at root s = 7 TeV, correspond to an integrated luminosity of 5.0 fb(-1). The individual rapidity distributions of the boson and the jet are consistent within 5% with expectations from perturbative QCD. However, QCD predictions for the sum and the difference in rapidities of the two final-state objects show discrepancies with CMS data. In particular, next-to-leading-order QCD calculations, and two common Monte Carlo event generators using different methods to match matrix-element partons with parton showers, appear inconsistent with the data as well as with each other.",
journal = "Physical Review D",
title = "Rapidity distributions in exclusive Z plus jet and gamma plus jet events in pp collisions at root s=7 TeV",
volume = "88",
number = "11",
doi = "10.1103/PhysRevD.88.112009"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Rapidity distributions in exclusive Z plus jet and gamma plus jet events in pp collisions at root s=7 TeV. in Physical Review D, 88(11).
https://doi.org/10.1103/PhysRevD.88.112009

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Rapidity distributions in exclusive Z plus jet and gamma plus jet events in pp collisions at root s=7 TeV. in Physical Review D. 2013;88(11).
doi:10.1103/PhysRevD.88.112009 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Rapidity distributions in exclusive Z plus jet and gamma plus jet events in pp collisions at root s=7 TeV" in Physical Review D, 88, no. 11 (2013),
https://doi.org/10.1103/PhysRevD.88.112009 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5814
AB  - The polarizations of prompt J/psi and psi(2S) mesons are measured in proton-proton collisions at root s = 7 TeV, using a dimuon data sample collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.9 fb(-1). The prompt J/psi and psi(2S) polarization parameters lambda, lambda, and lambda, as well as the frame-invariant quantity (lambda) over bar. are measured from the dimuon decay angular distributions in three different polarization frames. The J/psi results are obtained in the transverse momentum range 14 LT P-T LT 70 GeV, in the rapidity intervals |y| LT 0.6 and 0.6 LT |y| LT 1.2. The corresponding psi(2S) results cover 14 LT PT LT 50 GeV and include a third rapidity bin, 1.2 LT |y| LT 1.5. No evidence of large polarizations is seen in these kinematic regions, which extend much beyond those previously explored. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Measurement of the prompt J/psi and psi(2S) polarizations in pp collisions at root s=7 TeV
VL  - 727
IS  - 4-5
SP  - 381
EP  - 402
DO  - 10.1016/j.physletb.2013.10.055
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "The polarizations of prompt J/psi and psi(2S) mesons are measured in proton-proton collisions at root s = 7 TeV, using a dimuon data sample collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.9 fb(-1). The prompt J/psi and psi(2S) polarization parameters lambda, lambda, and lambda, as well as the frame-invariant quantity (lambda) over bar. are measured from the dimuon decay angular distributions in three different polarization frames. The J/psi results are obtained in the transverse momentum range 14 LT P-T LT 70 GeV, in the rapidity intervals |y| LT 0.6 and 0.6 LT |y| LT 1.2. The corresponding psi(2S) results cover 14 LT PT LT 50 GeV and include a third rapidity bin, 1.2 LT |y| LT 1.5. No evidence of large polarizations is seen in these kinematic regions, which extend much beyond those previously explored. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Measurement of the prompt J/psi and psi(2S) polarizations in pp collisions at root s=7 TeV",
volume = "727",
number = "4-5",
pages = "381-402",
doi = "10.1016/j.physletb.2013.10.055"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Measurement of the prompt J/psi and psi(2S) polarizations in pp collisions at root s=7 TeV. in Physics Letters B, 727(4-5), 381-402.
https://doi.org/10.1016/j.physletb.2013.10.055

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the prompt J/psi and psi(2S) polarizations in pp collisions at root s=7 TeV. in Physics Letters B. 2013;727(4-5):381-402.
doi:10.1016/j.physletb.2013.10.055 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the prompt J/psi and psi(2S) polarizations in pp collisions at root s=7 TeV" in Physics Letters B, 727, no. 4-5 (2013):381-402,
https://doi.org/10.1016/j.physletb.2013.10.055 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5801
AB  - The Upsilon(1S), Upsilon(2S), and Upsilon(3S) production cross sections are measured using a data sample corresponding to an integrated luminosity of 35.8 +/- 1.4 pb(-1) of proton-proton collisions at root s = 7 TeV, collected with the CMS detector at the LHC. The Upsilon resonances are identified through their decays to dimuons. Integrated over the Upsilon transverse momentum range p(T)(Upsilon) LT 50 GeV/c and rapidity range vertical bar y(Upsilon)vertical bar LT 2.4, and assuming unpolarized Upsilon production, the products of the Upsilon production cross sections and dimuon branching fractions are sigma (pp - GT Upsilon(1S)X) . B(Upsilon(1S) - GT mu(+)mu(-)) = (8.55 +/- 0.05(-0.50)(+0.56) +/- 0.34) nb, sigma (pp - GT Upsilon(2S)X) . B(Upsilon(2S) - GT mu(+)mu(-)) = (2.21 +/- 0.03(-0.14)(+0.16) +/- 0.09) nb, sigma (pp - GT Upsilon(3S)X) . B(Upsilon(3S) - GT mu(+)mu(-)) = (1.11 +/- 0.02(-0.08)(+0.10) +/- 0.04) nb, where the first uncertainty is statistical, the second is systematic, and the third is from the uncertainty in the integrated luminosity. The differential cross sections in bins of transverse momentum and rapidity, and the cross section ratios are presented. Cross section measurements performed within a restricted muon kinematic range and not corrected for acceptance are also provided. These latter measurements are independent of Upsilon polarization assumptions. The results are compared to theoretical predictions and previous measurements. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Measurement of the Upsilon(1S), Upsilon(2S), and Upsilon(3S) cross sections in pp collisions at root s=7 TeV
VL  - 727
IS  - 1-3
SP  - 101
EP  - 125
DO  - 10.1016/j.physletb.2013.10.033
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "The Upsilon(1S), Upsilon(2S), and Upsilon(3S) production cross sections are measured using a data sample corresponding to an integrated luminosity of 35.8 +/- 1.4 pb(-1) of proton-proton collisions at root s = 7 TeV, collected with the CMS detector at the LHC. The Upsilon resonances are identified through their decays to dimuons. Integrated over the Upsilon transverse momentum range p(T)(Upsilon) LT 50 GeV/c and rapidity range vertical bar y(Upsilon)vertical bar LT 2.4, and assuming unpolarized Upsilon production, the products of the Upsilon production cross sections and dimuon branching fractions are sigma (pp - GT Upsilon(1S)X) . B(Upsilon(1S) - GT mu(+)mu(-)) = (8.55 +/- 0.05(-0.50)(+0.56) +/- 0.34) nb, sigma (pp - GT Upsilon(2S)X) . B(Upsilon(2S) - GT mu(+)mu(-)) = (2.21 +/- 0.03(-0.14)(+0.16) +/- 0.09) nb, sigma (pp - GT Upsilon(3S)X) . B(Upsilon(3S) - GT mu(+)mu(-)) = (1.11 +/- 0.02(-0.08)(+0.10) +/- 0.04) nb, where the first uncertainty is statistical, the second is systematic, and the third is from the uncertainty in the integrated luminosity. The differential cross sections in bins of transverse momentum and rapidity, and the cross section ratios are presented. Cross section measurements performed within a restricted muon kinematic range and not corrected for acceptance are also provided. These latter measurements are independent of Upsilon polarization assumptions. The results are compared to theoretical predictions and previous measurements. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Measurement of the Upsilon(1S), Upsilon(2S), and Upsilon(3S) cross sections in pp collisions at root s=7 TeV",
volume = "727",
number = "1-3",
pages = "101-125",
doi = "10.1016/j.physletb.2013.10.033"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Measurement of the Upsilon(1S), Upsilon(2S), and Upsilon(3S) cross sections in pp collisions at root s=7 TeV. in Physics Letters B, 727(1-3), 101-125.
https://doi.org/10.1016/j.physletb.2013.10.033

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the Upsilon(1S), Upsilon(2S), and Upsilon(3S) cross sections in pp collisions at root s=7 TeV. in Physics Letters B. 2013;727(1-3):101-125.
doi:10.1016/j.physletb.2013.10.033 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the Upsilon(1S), Upsilon(2S), and Upsilon(3S) cross sections in pp collisions at root s=7 TeV" in Physics Letters B, 727, no. 1-3 (2013):101-125,
https://doi.org/10.1016/j.physletb.2013.10.033 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5800
AB  - The angular distributions and the differential branching fraction of the decay B-0 - GT K*(892)(0)mu(+)mu(-) are studied using a data sample corresponding to an integrated luminosity of 5.2 fb(-1) collected with the CMS detector at the LHC in pp collisions at root s = 7 TeV. From more than 400 signal decays, the forward-backward asymmetry of the muons, the K*(892)(0) longitudinal polarization fraction, and the differential branching fraction are determined as a function of the square of the dimuon invariant mass. The measurements are in good agreement with standard model predictions. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Angular analysis and branching fraction measurement of the decay B-0 - GT K*(0)mu(+)mu(-)
VL  - 727
IS  - 1-3
SP  - 77
EP  - 100
DO  - 10.1016/j.physletb.2013.10.017
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "The angular distributions and the differential branching fraction of the decay B-0 - GT K*(892)(0)mu(+)mu(-) are studied using a data sample corresponding to an integrated luminosity of 5.2 fb(-1) collected with the CMS detector at the LHC in pp collisions at root s = 7 TeV. From more than 400 signal decays, the forward-backward asymmetry of the muons, the K*(892)(0) longitudinal polarization fraction, and the differential branching fraction are determined as a function of the square of the dimuon invariant mass. The measurements are in good agreement with standard model predictions. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Angular analysis and branching fraction measurement of the decay B-0 - GT K*(0)mu(+)mu(-)",
volume = "727",
number = "1-3",
pages = "77-100",
doi = "10.1016/j.physletb.2013.10.017"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Angular analysis and branching fraction measurement of the decay B-0 - GT K*(0)mu(+)mu(-). in Physics Letters B, 727(1-3), 77-100.
https://doi.org/10.1016/j.physletb.2013.10.017

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Angular analysis and branching fraction measurement of the decay B-0 - GT K*(0)mu(+)mu(-). in Physics Letters B. 2013;727(1-3):77-100.
doi:10.1016/j.physletb.2013.10.017 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Angular analysis and branching fraction measurement of the decay B-0 - GT K*(0)mu(+)mu(-)" in Physics Letters B, 727, no. 1-3 (2013):77-100,
https://doi.org/10.1016/j.physletb.2013.10.017 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5799
AB  - The results of a search for the bottomonium counterpart, denoted as X-b, of the exotic charmonium state X(3872) is presented. The analysis is based on a sample of pp collisions at,root s = 8 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 20.7 fb(-1). The search looks for the exclusive decay channel X-b - GT Upsilon(1S)pi(+)pi(-) followed by Upsilon(1S) - GT mu(+)mu(-). No evidence for an X-b signal is observed. Upper limits are set at the 95% confidence level on the ratio of the inclusive production cross sections times the branching fractions to Upsilon(1S)pi(+)pi(-) of the X-b and the Upsilon(2S). The upper limits on the ratio are in the range 0.9-5.4% for X-b masses between 10 and 11 GeV. These are the first upper limits on the production of a possible X-b at a hadron collider. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV
VL  - 727
IS  - 1-3
SP  - 57
EP  - 76
DO  - 10.1016/j.physletb.2013.10.016
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "The results of a search for the bottomonium counterpart, denoted as X-b, of the exotic charmonium state X(3872) is presented. The analysis is based on a sample of pp collisions at,root s = 8 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 20.7 fb(-1). The search looks for the exclusive decay channel X-b - GT Upsilon(1S)pi(+)pi(-) followed by Upsilon(1S) - GT mu(+)mu(-). No evidence for an X-b signal is observed. Upper limits are set at the 95% confidence level on the ratio of the inclusive production cross sections times the branching fractions to Upsilon(1S)pi(+)pi(-) of the X-b and the Upsilon(2S). The upper limits on the ratio are in the range 0.9-5.4% for X-b masses between 10 and 11 GeV. These are the first upper limits on the production of a possible X-b at a hadron collider. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV",
volume = "727",
number = "1-3",
pages = "57-76",
doi = "10.1016/j.physletb.2013.10.016"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV. in Physics Letters B, 727(1-3), 57-76.
https://doi.org/10.1016/j.physletb.2013.10.016

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV. in Physics Letters B. 2013;727(1-3):57-76.
doi:10.1016/j.physletb.2013.10.016 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV" in Physics Letters B, 727, no. 1-3 (2013):57-76,
https://doi.org/10.1016/j.physletb.2013.10.016 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5796
AB  - A study of proton-proton collisions in which two b hadrons are produced in association with a Z boson is reported. The collisions were recorded at a centre-of-mass energy of 7 TeVwith the CMS detector at the LHC, for an integrated luminosity of 5.2 fb(-1). The b hadrons are identified by means of displaced secondary vertices, without the use of reconstructed jets, permitting the study of b-hadron pair production at small angular separation. Differential cross sections are presented as a function of the angular separation of the b hadrons and the Z boson. In addition, inclusive measurements are presented. For both the inclusive and differential studies, different ranges of Z boson momentum are considered, and each measurement is compared to the predictions from different event generators at leading-order and next-to-leading-order accuracy.
T2  - Journal of High Energy Physics
T1  - Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at root s=7 TeV
IS  - 12
DO  - 10.1007/JHEP12(2013)039
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "A study of proton-proton collisions in which two b hadrons are produced in association with a Z boson is reported. The collisions were recorded at a centre-of-mass energy of 7 TeVwith the CMS detector at the LHC, for an integrated luminosity of 5.2 fb(-1). The b hadrons are identified by means of displaced secondary vertices, without the use of reconstructed jets, permitting the study of b-hadron pair production at small angular separation. Differential cross sections are presented as a function of the angular separation of the b hadrons and the Z boson. In addition, inclusive measurements are presented. For both the inclusive and differential studies, different ranges of Z boson momentum are considered, and each measurement is compared to the predictions from different event generators at leading-order and next-to-leading-order accuracy.",
journal = "Journal of High Energy Physics",
title = "Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at root s=7 TeV",
number = "12",
doi = "10.1007/JHEP12(2013)039"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at root s=7 TeV. in Journal of High Energy Physics(12).
https://doi.org/10.1007/JHEP12(2013)039

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at root s=7 TeV. in Journal of High Energy Physics. 2013;(12).
doi:10.1007/JHEP12(2013)039 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at root s=7 TeV" in Journal of High Energy Physics, no. 12 (2013),
https://doi.org/10.1007/JHEP12(2013)039 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5795
AB  - Measurements of the differential and double-differential Drell-Yan cross sections are presented using an integrated luminosity of 4.5 (4.8) fb(-1) in the dimuon (dielectron) channel of proton-proton collision data recorded with the CMS detector at the LHC at = 7 TeV. The measured inclusive cross section in the Z-peak region (60-120 GeV) is sigma(aa) = 986.4 +/- 0.6 (stat.) +/- 5.9 (exp. syst.) +/- 21.7 (th. syst.) +/- 21.7 (lum.) pb for the combination of the dimuon and dielectron channels. Differential cross sections d sigma/dm for the dimuon, dielectron, and combined channels are measured in the mass range 15 to 1500 GeV and corrected to the full phase space. Results are also presented for the measurement of the double-differential cross section d(2)sigma/dm d|y| in the dimuon channel over the mass range 20 to 1500 GeV and absolute dimuon rapidity from 0 to 2.4. These measurements are compared to the predictions of perturbative QCD calculations at next-to-leading and next-to-next-to-leading orders using various sets of parton distribution functions.
T2  - Journal of High Energy Physics
T1  - Measurement of the differential and double-differential Drell-Yan cross sections in proton-proton collisions at root s=7 TeV
IS  - 12
DO  - 10.1007/JHEP12(2013)030
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "Measurements of the differential and double-differential Drell-Yan cross sections are presented using an integrated luminosity of 4.5 (4.8) fb(-1) in the dimuon (dielectron) channel of proton-proton collision data recorded with the CMS detector at the LHC at = 7 TeV. The measured inclusive cross section in the Z-peak region (60-120 GeV) is sigma(aa) = 986.4 +/- 0.6 (stat.) +/- 5.9 (exp. syst.) +/- 21.7 (th. syst.) +/- 21.7 (lum.) pb for the combination of the dimuon and dielectron channels. Differential cross sections d sigma/dm for the dimuon, dielectron, and combined channels are measured in the mass range 15 to 1500 GeV and corrected to the full phase space. Results are also presented for the measurement of the double-differential cross section d(2)sigma/dm d|y| in the dimuon channel over the mass range 20 to 1500 GeV and absolute dimuon rapidity from 0 to 2.4. These measurements are compared to the predictions of perturbative QCD calculations at next-to-leading and next-to-next-to-leading orders using various sets of parton distribution functions.",
journal = "Journal of High Energy Physics",
title = "Measurement of the differential and double-differential Drell-Yan cross sections in proton-proton collisions at root s=7 TeV",
number = "12",
doi = "10.1007/JHEP12(2013)030"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Measurement of the differential and double-differential Drell-Yan cross sections in proton-proton collisions at root s=7 TeV. in Journal of High Energy Physics(12).
https://doi.org/10.1007/JHEP12(2013)030

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the differential and double-differential Drell-Yan cross sections in proton-proton collisions at root s=7 TeV. in Journal of High Energy Physics. 2013;(12).
doi:10.1007/JHEP12(2013)030 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the differential and double-differential Drell-Yan cross sections in proton-proton collisions at root s=7 TeV" in Journal of High Energy Physics, no. 12 (2013),
https://doi.org/10.1007/JHEP12(2013)030 . .

TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5793
AB  - Characteristics of multi-particle production in proton-proton collisions at root s = 7 TeV are studied as a function of the charged-particle multiplicity, N (ch). The produced particles are separated into two classes: those belonging to jets and those belonging to the underlying event. Charged particles are measured with pseudorapidity |eta| LT 2.4 and transverse momentum p (T) GT 0.25 GeV/c. Jets are reconstructed from charged-particles only and required to have p (T) GT 5 GeV/c. The distributions of jet p (T), average p (T) of charged particles belonging to the underlying event or to jets, jet rates, and jet shapes are presented as functions of N (ch) and compared to the predictions of the pythia and herwig event generators. Predictions without multi-parton interactions fail completely to describe the N (ch)-dependence observed in the data. For increasing N (ch), pythia systematically predicts higher jet rates and harder p (T) spectra than seen in the data, whereas herwig shows the opposite trends. At the highest multiplicity, the data-model agreement is worse for most observables, indicating the need for further tuning and/or new model ingredients.
T2  - European Physical Journal C. Particles and Fields
T1  - Jet and underlying event properties as a function of charged-particle multiplicity in proton-proton collisions at root s=7 TeV
VL  - 73
IS  - 12
DO  - 10.1140/epjc/s10052-013-2674-5
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "Characteristics of multi-particle production in proton-proton collisions at root s = 7 TeV are studied as a function of the charged-particle multiplicity, N (ch). The produced particles are separated into two classes: those belonging to jets and those belonging to the underlying event. Charged particles are measured with pseudorapidity |eta| LT 2.4 and transverse momentum p (T) GT 0.25 GeV/c. Jets are reconstructed from charged-particles only and required to have p (T) GT 5 GeV/c. The distributions of jet p (T), average p (T) of charged particles belonging to the underlying event or to jets, jet rates, and jet shapes are presented as functions of N (ch) and compared to the predictions of the pythia and herwig event generators. Predictions without multi-parton interactions fail completely to describe the N (ch)-dependence observed in the data. For increasing N (ch), pythia systematically predicts higher jet rates and harder p (T) spectra than seen in the data, whereas herwig shows the opposite trends. At the highest multiplicity, the data-model agreement is worse for most observables, indicating the need for further tuning and/or new model ingredients.",
journal = "European Physical Journal C. Particles and Fields",
title = "Jet and underlying event properties as a function of charged-particle multiplicity in proton-proton collisions at root s=7 TeV",
volume = "73",
number = "12",
doi = "10.1140/epjc/s10052-013-2674-5"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Jet and underlying event properties as a function of charged-particle multiplicity in proton-proton collisions at root s=7 TeV. in European Physical Journal C. Particles and Fields, 73(12).
https://doi.org/10.1140/epjc/s10052-013-2674-5

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Jet and underlying event properties as a function of charged-particle multiplicity in proton-proton collisions at root s=7 TeV. in European Physical Journal C. Particles and Fields. 2013;73(12).
doi:10.1140/epjc/s10052-013-2674-5 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Jet and underlying event properties as a function of charged-particle multiplicity in proton-proton collisions at root s=7 TeV" in European Physical Journal C. Particles and Fields, 73, no. 12 (2013),
https://doi.org/10.1140/epjc/s10052-013-2674-5 . .