TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1617
AB  - The invariance of the standard model (SM) under the CPT transformation predicts equality of particle and antiparticle masses. This prediction is tested by measuring the mass difference between the top quark and antiquark (Delta m(t) = m(t) - m((t) over bar)) that are produced in pp collisions at a center-of-mass energy of 8 TeV, using events with a muon or an electron and at least four jets in the final state. The analysis is based on data corresponding to an integrated luminosity of 19.6 fb(-1) collected by the CMS experiment at the LHC, and yields a value of Delta m(t) = 0.15 0.19 (stat) +/- 0.09(syst) GeV, which is consistent with the SM expectation. This result is significantly more precise than previously reported measurements. (C) 2017 The Author(s). Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Measurement of the mass difference between top quark and antiquark in pp collisions at root s=8 TeV
VL  - 770
SP  - 50
EP  - 71
DO  - 10.1016/j.physletb.2017.04.028
ER  - 

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2017",
abstract = "The invariance of the standard model (SM) under the CPT transformation predicts equality of particle and antiparticle masses. This prediction is tested by measuring the mass difference between the top quark and antiquark (Delta m(t) = m(t) - m((t) over bar)) that are produced in pp collisions at a center-of-mass energy of 8 TeV, using events with a muon or an electron and at least four jets in the final state. The analysis is based on data corresponding to an integrated luminosity of 19.6 fb(-1) collected by the CMS experiment at the LHC, and yields a value of Delta m(t) = 0.15 0.19 (stat) +/- 0.09(syst) GeV, which is consistent with the SM expectation. This result is significantly more precise than previously reported measurements. (C) 2017 The Author(s). Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Measurement of the mass difference between top quark and antiquark in pp collisions at root s=8 TeV",
volume = "770",
pages = "50-71",
doi = "10.1016/j.physletb.2017.04.028"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Milošević, J., Milenović, P.,& Reković, V.. (2017). Measurement of the mass difference between top quark and antiquark in pp collisions at root s=8 TeV. in Physics Letters B, 770, 50-71.
https://doi.org/10.1016/j.physletb.2017.04.028

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Milošević J, Milenović P, Reković V. Measurement of the mass difference between top quark and antiquark in pp collisions at root s=8 TeV. in Physics Letters B. 2017;770:50-71.
doi:10.1016/j.physletb.2017.04.028 .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the mass difference between top quark and antiquark in pp collisions at root s=8 TeV" in Physics Letters B, 770 (2017):50-71,
https://doi.org/10.1016/j.physletb.2017.04.028 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1309
AB  - A search for pair production of third-generation scalar leptoquarks decaying to top quark and τ lepton pairs is presented using proton-proton collision data at a center-of-mass energy of s√=8 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb−1. The search is performed using events that contain an electron or a muon, a hadronically decaying τ lepton, and two or more jets. The observations are found to be consistent with the standard model predictions. Assuming that all leptoquarks decay to a top quark and a τ lepton, the existence of pair produced, charge −1/3, third-generation leptoquarks up to a mass of 685 GeV is excluded at 95% confidence level. This result constitutes the first direct limit for leptoquarks decaying into a top quark and a τ lepton, and may also be applied directly to the pair production of bottom squarks decaying predominantly via the R-parity violating coupling λ′333
T2  - Journal of High Energy Physics
T1  - Erratum: Search for third-generation scalar leptoquarks in the t tau channel in proton-proton collisions at root s = 8 TeV (vol 7, 042, 2015)
IS  - 11
DO  - 10.1007/JHEP11(2016)056
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A search for pair production of third-generation scalar leptoquarks decaying to top quark and τ lepton pairs is presented using proton-proton collision data at a center-of-mass energy of s√=8 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb−1. The search is performed using events that contain an electron or a muon, a hadronically decaying τ lepton, and two or more jets. The observations are found to be consistent with the standard model predictions. Assuming that all leptoquarks decay to a top quark and a τ lepton, the existence of pair produced, charge −1/3, third-generation leptoquarks up to a mass of 685 GeV is excluded at 95% confidence level. This result constitutes the first direct limit for leptoquarks decaying into a top quark and a τ lepton, and may also be applied directly to the pair production of bottom squarks decaying predominantly via the R-parity violating coupling λ′333",
journal = "Journal of High Energy Physics",
title = "Erratum: Search for third-generation scalar leptoquarks in the t tau channel in proton-proton collisions at root s = 8 TeV (vol 7, 042, 2015)",
number = "11",
doi = "10.1007/JHEP11(2016)056"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Erratum: Search for third-generation scalar leptoquarks in the t tau channel in proton-proton collisions at root s = 8 TeV (vol 7, 042, 2015). in Journal of High Energy Physics(11).
https://doi.org/10.1007/JHEP11(2016)056

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Erratum: Search for third-generation scalar leptoquarks in the t tau channel in proton-proton collisions at root s = 8 TeV (vol 7, 042, 2015). in Journal of High Energy Physics. 2016;(11).
doi:10.1007/JHEP11(2016)056 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Erratum: Search for third-generation scalar leptoquarks in the t tau channel in proton-proton collisions at root s = 8 TeV (vol 7, 042, 2015)" in Journal of High Energy Physics, no. 11 (2016),
https://doi.org/10.1007/JHEP11(2016)056 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1010
T2  - Journal of High Energy Physics
T1  - Erratum: Comparison of the Z/gamma* + jets to gamma + jets cross sections in pp collisions at root s = 8 (vol 10, 128, 2015)
IS  - 4
DO  - 10.1007/JHEP04(2016)010
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
journal = "Journal of High Energy Physics",
title = "Erratum: Comparison of the Z/gamma* + jets to gamma + jets cross sections in pp collisions at root s = 8 (vol 10, 128, 2015)",
number = "4",
doi = "10.1007/JHEP04(2016)010"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Erratum: Comparison of the Z/gamma* + jets to gamma + jets cross sections in pp collisions at root s = 8 (vol 10, 128, 2015). in Journal of High Energy Physics(4).
https://doi.org/10.1007/JHEP04(2016)010

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Erratum: Comparison of the Z/gamma* + jets to gamma + jets cross sections in pp collisions at root s = 8 (vol 10, 128, 2015). in Journal of High Energy Physics. 2016;(4).
doi:10.1007/JHEP04(2016)010 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Erratum: Comparison of the Z/gamma* + jets to gamma + jets cross sections in pp collisions at root s = 8 (vol 10, 128, 2015)" in Journal of High Energy Physics, no. 4 (2016),
https://doi.org/10.1007/JHEP04(2016)010 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1519
AB  - A measurement of the W boson pair production cross section in proton-proton collisions at root s = 8TeV is presented. The data collected with the CMS detector at the LHC correspond to an integrated luminosity of 19.4 fb(-1). The W+W- candidates are selected from events with two charged leptons, electrons or muons, and large missing transverse energy. The measured W+W- cross section is 60.1 +/- 0.9 (stat) +/- 3.2 (exp) +/- 3.1 (theo) +/- 1.6 (lumi) pb = 60.1 +/- 4.8 pb, consistent with the standard model prediction. The W+W- cross sections are also measured in two different fiducial phase space regions. The normalized differential cross section is measured as a function of kinematic variables of the final-state charged leptons and compared with several perturbative QCD predictions. Limits on anomalous gauge couplings associated with dimension-six operators are also given in the framework of an effective field theory. The corresponding 95 % confidence level intervals are -5.7 LT c(WWW)/Lambda(2) LT 5.9TeV(-2), -11.4 LT c(W)/Lambda(2) LT 5.4TeV(-2), -29.2 LT c(B)/Lambda(2) LT 23.9 TeV-2, in the HISZ basis.
T2  - European Physical Journal C. Particles and Fields
T1  - Measurement of the W+W- cross section in pp collisions at root s=8 TeV and limits on anomalous gauge couplings
VL  - 76
IS  - 7
DO  - 10.1140/epjc/s10052-016-4219-1
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A measurement of the W boson pair production cross section in proton-proton collisions at root s = 8TeV is presented. The data collected with the CMS detector at the LHC correspond to an integrated luminosity of 19.4 fb(-1). The W+W- candidates are selected from events with two charged leptons, electrons or muons, and large missing transverse energy. The measured W+W- cross section is 60.1 +/- 0.9 (stat) +/- 3.2 (exp) +/- 3.1 (theo) +/- 1.6 (lumi) pb = 60.1 +/- 4.8 pb, consistent with the standard model prediction. The W+W- cross sections are also measured in two different fiducial phase space regions. The normalized differential cross section is measured as a function of kinematic variables of the final-state charged leptons and compared with several perturbative QCD predictions. Limits on anomalous gauge couplings associated with dimension-six operators are also given in the framework of an effective field theory. The corresponding 95 % confidence level intervals are -5.7 LT c(WWW)/Lambda(2) LT 5.9TeV(-2), -11.4 LT c(W)/Lambda(2) LT 5.4TeV(-2), -29.2 LT c(B)/Lambda(2) LT 23.9 TeV-2, in the HISZ basis.",
journal = "European Physical Journal C. Particles and Fields",
title = "Measurement of the W+W- cross section in pp collisions at root s=8 TeV and limits on anomalous gauge couplings",
volume = "76",
number = "7",
doi = "10.1140/epjc/s10052-016-4219-1"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Measurement of the W+W- cross section in pp collisions at root s=8 TeV and limits on anomalous gauge couplings. in European Physical Journal C. Particles and Fields, 76(7).
https://doi.org/10.1140/epjc/s10052-016-4219-1

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Measurement of the W+W- cross section in pp collisions at root s=8 TeV and limits on anomalous gauge couplings. in European Physical Journal C. Particles and Fields. 2016;76(7).
doi:10.1140/epjc/s10052-016-4219-1 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Measurement of the W+W- cross section in pp collisions at root s=8 TeV and limits on anomalous gauge couplings" in European Physical Journal C. Particles and Fields, 76, no. 7 (2016),
https://doi.org/10.1140/epjc/s10052-016-4219-1 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1356
AB  - The decorrelation in the azimuthal angle between the most forward and the most backward jets (Mueller-Navelet jets) is measured in data collected in pp collisions with the CMS detector at the LHC at root s = 7 TeV. The measurement is presented in the form of distributions of azimuthal-angle differences, Delta phi, between the Mueller-Navelet jets, the average cosines of (pi - Delta phi), 2(pi - Delta phi), and 3(pi - Delta phi), and ratios of these cosines. The jets are required to have transverse momenta, p(T), in excess of 35 GeV and rapidities, |y|, of less than 4.7. The results are presented as a function of the rapidity separation, Delta y, between the Mueller-Navelet jets, reaching Delta y up to 9.4 for the first time. The results are compared to predictions of various Monte Carlo event generators and to analytical predictions based on the DGLAP and BFKL parton evolution schemes.
T2  - Journal of High Energy Physics
T1  - Azimuthal decorrelation of jets widely separated in rapidity in pp collisions at root s=7 TeV
IS  - 8
DO  - 10.1007/JHEP08(2016)139
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "The decorrelation in the azimuthal angle between the most forward and the most backward jets (Mueller-Navelet jets) is measured in data collected in pp collisions with the CMS detector at the LHC at root s = 7 TeV. The measurement is presented in the form of distributions of azimuthal-angle differences, Delta phi, between the Mueller-Navelet jets, the average cosines of (pi - Delta phi), 2(pi - Delta phi), and 3(pi - Delta phi), and ratios of these cosines. The jets are required to have transverse momenta, p(T), in excess of 35 GeV and rapidities, |y|, of less than 4.7. The results are presented as a function of the rapidity separation, Delta y, between the Mueller-Navelet jets, reaching Delta y up to 9.4 for the first time. The results are compared to predictions of various Monte Carlo event generators and to analytical predictions based on the DGLAP and BFKL parton evolution schemes.",
journal = "Journal of High Energy Physics",
title = "Azimuthal decorrelation of jets widely separated in rapidity in pp collisions at root s=7 TeV",
number = "8",
doi = "10.1007/JHEP08(2016)139"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Azimuthal decorrelation of jets widely separated in rapidity in pp collisions at root s=7 TeV. in Journal of High Energy Physics(8).
https://doi.org/10.1007/JHEP08(2016)139

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Azimuthal decorrelation of jets widely separated in rapidity in pp collisions at root s=7 TeV. in Journal of High Energy Physics. 2016;(8).
doi:10.1007/JHEP08(2016)139 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Azimuthal decorrelation of jets widely separated in rapidity in pp collisions at root s=7 TeV" in Journal of High Energy Physics, no. 8 (2016),
https://doi.org/10.1007/JHEP08(2016)139 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1241
AB  - Measurements are reported of the normalized differential cross sections for top quark pair production with respect to four kinematic event variables: the missing transverse energy; the scalar sum of the jet transverse momentum (p(T)); the scalar sum of the pT of all objects in the event; and the pT of leptonically decaying W bosons from top quark decays. The data sample, collected using the CMS detector at the LHC, consists of 5.0 fb(-1) of proton-proton collisions at root s = 7 TeV and 19.7 fb(-1) at root s = 8 TeV. Top quark pair events containing one electron or muon are selected. The results are presented after correcting for detector effects to allow direct comparison with theoretical predictions. No significant deviations from the predictions of several standard model event simulation generators are observed.
T2  - Physical Review D
T1  - Measurement of the differential cross sections for top quark pair production as a function of kinematic event variables in pp collisions at root s=7 and 8 TeV
VL  - 94
IS  - 5
DO  - 10.1103/PhysRevD.94.052006
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "Measurements are reported of the normalized differential cross sections for top quark pair production with respect to four kinematic event variables: the missing transverse energy; the scalar sum of the jet transverse momentum (p(T)); the scalar sum of the pT of all objects in the event; and the pT of leptonically decaying W bosons from top quark decays. The data sample, collected using the CMS detector at the LHC, consists of 5.0 fb(-1) of proton-proton collisions at root s = 7 TeV and 19.7 fb(-1) at root s = 8 TeV. Top quark pair events containing one electron or muon are selected. The results are presented after correcting for detector effects to allow direct comparison with theoretical predictions. No significant deviations from the predictions of several standard model event simulation generators are observed.",
journal = "Physical Review D",
title = "Measurement of the differential cross sections for top quark pair production as a function of kinematic event variables in pp collisions at root s=7 and 8 TeV",
volume = "94",
number = "5",
doi = "10.1103/PhysRevD.94.052006"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Measurement of the differential cross sections for top quark pair production as a function of kinematic event variables in pp collisions at root s=7 and 8 TeV. in Physical Review D, 94(5).
https://doi.org/10.1103/PhysRevD.94.052006

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Measurement of the differential cross sections for top quark pair production as a function of kinematic event variables in pp collisions at root s=7 and 8 TeV. in Physical Review D. 2016;94(5).
doi:10.1103/PhysRevD.94.052006 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Measurement of the differential cross sections for top quark pair production as a function of kinematic event variables in pp collisions at root s=7 and 8 TeV" in Physical Review D, 94, no. 5 (2016),
https://doi.org/10.1103/PhysRevD.94.052006 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1195
AB  - The inelastic hadronic cross section in proton-lead collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is measured with the CMS detector at the LHC. The data sample, corresponding to an integrated luminosity of L = 12.6 +/- 0.4 nb(-1), has been collected with an unbiased trigger for inclusive particle production. The cross section is obtained from the measured number of proton-lead collisions with hadronic activity produced in the pseudorapidity ranges 3 LT eta LT 5 and/or -5 LT eta LT -3, corrected for photon-induced contributions, experimental acceptance, and other instrumental effects. The inelastic cross section is measured to be sigma(inel)(pPb) = 2061 +/- 3(stat) +/- 34(syst) +/- 72(lumi) mb. Various Monte Carlo generators, commonly used in heavy ion and cosmic ray physics, are found to reproduce the data within uncertainties. The value of sigma(inel)(pPb) is compatible with that expected from the proton-proton cross section at 5.02 TeV scaled up within a simple Glauber approach to account for multiple scatterings in the lead nucleus, indicating that further net nuclear corrections are small. (C) 2016 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org//licenses/by/4.0/).
T2  - Physics Letters B
T1  - Measurement of the inelastic cross section in proton-lead collisions at root s(NN)=5.02 TeV
VL  - 759
SP  - 641
EP  - 662
DO  - 10.1016/j.physletb.2016.06.027
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "The inelastic hadronic cross section in proton-lead collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is measured with the CMS detector at the LHC. The data sample, corresponding to an integrated luminosity of L = 12.6 +/- 0.4 nb(-1), has been collected with an unbiased trigger for inclusive particle production. The cross section is obtained from the measured number of proton-lead collisions with hadronic activity produced in the pseudorapidity ranges 3 LT eta LT 5 and/or -5 LT eta LT -3, corrected for photon-induced contributions, experimental acceptance, and other instrumental effects. The inelastic cross section is measured to be sigma(inel)(pPb) = 2061 +/- 3(stat) +/- 34(syst) +/- 72(lumi) mb. Various Monte Carlo generators, commonly used in heavy ion and cosmic ray physics, are found to reproduce the data within uncertainties. The value of sigma(inel)(pPb) is compatible with that expected from the proton-proton cross section at 5.02 TeV scaled up within a simple Glauber approach to account for multiple scatterings in the lead nucleus, indicating that further net nuclear corrections are small. (C) 2016 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org//licenses/by/4.0/).",
journal = "Physics Letters B",
title = "Measurement of the inelastic cross section in proton-lead collisions at root s(NN)=5.02 TeV",
volume = "759",
pages = "641-662",
doi = "10.1016/j.physletb.2016.06.027"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Measurement of the inelastic cross section in proton-lead collisions at root s(NN)=5.02 TeV. in Physics Letters B, 759, 641-662.
https://doi.org/10.1016/j.physletb.2016.06.027

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Measurement of the inelastic cross section in proton-lead collisions at root s(NN)=5.02 TeV. in Physics Letters B. 2016;759:641-662.
doi:10.1016/j.physletb.2016.06.027 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Measurement of the inelastic cross section in proton-lead collisions at root s(NN)=5.02 TeV" in Physics Letters B, 759 (2016):641-662,
https://doi.org/10.1016/j.physletb.2016.06.027 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1118
AB  - A search for the production of a heavy B quark, having electric charge -1/3 and vector couplings to W, Z, and H bosons, is carried out using proton-proton collision data recorded at the CERN LHC by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb(-1). The B quark is assumed to be pair produced and to decay in one of three ways: to tW, bZ, or bH. The search is carried out in final states with one, two, and more than two charged leptons, as well as in fully hadronic final states. Each of the channels in the exclusive final-state topologies is designed to be sensitive to specific combinations of the B quark-antiquark pair decays. The observed event yields are found to be consistent with the standard model expectations in all the final states studied. A statistical combination of these results is performed, and upper limits are set on the cross section of the strongly produced B quark-antiquark pairs as a function of the B quark mass. Lower limits on the B quark mass between 740 and 900 GeVare set at a 95% confidence level, depending on the values of the branching fractions of the B quark to tW, bZ, and bH. Overall, these limits are the most stringent to date.
T2  - Physical Review D
T1  - Search for pair-produced vectorlike B quarks in proton-proton collisions at root s=8 TeV
VL  - 93
IS  - 11
DO  - 10.1103/PhysRevD.93.112009
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A search for the production of a heavy B quark, having electric charge -1/3 and vector couplings to W, Z, and H bosons, is carried out using proton-proton collision data recorded at the CERN LHC by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb(-1). The B quark is assumed to be pair produced and to decay in one of three ways: to tW, bZ, or bH. The search is carried out in final states with one, two, and more than two charged leptons, as well as in fully hadronic final states. Each of the channels in the exclusive final-state topologies is designed to be sensitive to specific combinations of the B quark-antiquark pair decays. The observed event yields are found to be consistent with the standard model expectations in all the final states studied. A statistical combination of these results is performed, and upper limits are set on the cross section of the strongly produced B quark-antiquark pairs as a function of the B quark mass. Lower limits on the B quark mass between 740 and 900 GeVare set at a 95% confidence level, depending on the values of the branching fractions of the B quark to tW, bZ, and bH. Overall, these limits are the most stringent to date.",
journal = "Physical Review D",
title = "Search for pair-produced vectorlike B quarks in proton-proton collisions at root s=8 TeV",
volume = "93",
number = "11",
doi = "10.1103/PhysRevD.93.112009"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for pair-produced vectorlike B quarks in proton-proton collisions at root s=8 TeV. in Physical Review D, 93(11).
https://doi.org/10.1103/PhysRevD.93.112009

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for pair-produced vectorlike B quarks in proton-proton collisions at root s=8 TeV. in Physical Review D. 2016;93(11).
doi:10.1103/PhysRevD.93.112009 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for pair-produced vectorlike B quarks in proton-proton collisions at root s=8 TeV" in Physical Review D, 93, no. 11 (2016),
https://doi.org/10.1103/PhysRevD.93.112009 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1106
AB  - The consistency of the spin correlation strength in top quark pair production with the standard model (SM) prediction is tested in the muon+jets final state. The events are selected from pp collisions, collected by the CMS detector, at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb(-1). The data are compared with the expectation for the spin correlation predicted by the SM and with the expectation of no correlation. Using a template fit method, the fraction of events that show SM spin correlations is measured to be 0.72 0.08 (stat)(-013)(+015) (syst), representing the most precise measurement of this quantity in the muon+jets final state to date. (C) 2016 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.orglicenses/by/4.01).
T2  - Physics Letters B
T1  - Measurement of spin correlations in tf production using the matrix element method in the muon plus jets final state in pp collisions at root S=8 TeV
VL  - 758
SP  - 321
EP  - 346
DO  - 10.1016/j.physletb.2016.05.005
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "The consistency of the spin correlation strength in top quark pair production with the standard model (SM) prediction is tested in the muon+jets final state. The events are selected from pp collisions, collected by the CMS detector, at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb(-1). The data are compared with the expectation for the spin correlation predicted by the SM and with the expectation of no correlation. Using a template fit method, the fraction of events that show SM spin correlations is measured to be 0.72 0.08 (stat)(-013)(+015) (syst), representing the most precise measurement of this quantity in the muon+jets final state to date. (C) 2016 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.orglicenses/by/4.01).",
journal = "Physics Letters B",
title = "Measurement of spin correlations in tf production using the matrix element method in the muon plus jets final state in pp collisions at root S=8 TeV",
volume = "758",
pages = "321-346",
doi = "10.1016/j.physletb.2016.05.005"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Measurement of spin correlations in tf production using the matrix element method in the muon plus jets final state in pp collisions at root S=8 TeV. in Physics Letters B, 758, 321-346.
https://doi.org/10.1016/j.physletb.2016.05.005

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Measurement of spin correlations in tf production using the matrix element method in the muon plus jets final state in pp collisions at root S=8 TeV. in Physics Letters B. 2016;758:321-346.
doi:10.1016/j.physletb.2016.05.005 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Measurement of spin correlations in tf production using the matrix element method in the muon plus jets final state in pp collisions at root S=8 TeV" in Physics Letters B, 758 (2016):321-346,
https://doi.org/10.1016/j.physletb.2016.05.005 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1105
AB  - A search is reported for a light pseudoscalar Higgs boson decaying to a pair of tau leptons, produced in association with a b (b) over bar pair, in the context of two-Higgs-doublet models. The results are based on pp collision data at a centre-of-mass energy of 8 TeV collected by the CMS experiment at the LHC and corresponding to an integrated luminosity of 19.7 fb(-1). Pseudoscalar boson masses between 25 and 80 GeV are probed. No evidence for a pseudoscalar boson is found and upper limits are set on the product of cross section and branching fraction to tau pairs between 7 and 39 pb at the 95% confidence level. This excludes pseudoscalar A bosons with masses between 25 and 80 GeV, with SM-like Higgs boson negative couplings to down-type fermions, produced in association with bb pairs, in Type II, two-Higgs-doublet models. (C) 2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommonnorg/licensesiby/4.01).
T2  - Physics Letters B
T1  - Search for a low-mass pseudoscalar Higgs boson produced in association with a b(b)over-bar pair in pp collisions at root s=8 TeV
VL  - 758
SP  - 296
EP  - 320
DO  - 10.1016/j.physletb.2016.05.003
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A search is reported for a light pseudoscalar Higgs boson decaying to a pair of tau leptons, produced in association with a b (b) over bar pair, in the context of two-Higgs-doublet models. The results are based on pp collision data at a centre-of-mass energy of 8 TeV collected by the CMS experiment at the LHC and corresponding to an integrated luminosity of 19.7 fb(-1). Pseudoscalar boson masses between 25 and 80 GeV are probed. No evidence for a pseudoscalar boson is found and upper limits are set on the product of cross section and branching fraction to tau pairs between 7 and 39 pb at the 95% confidence level. This excludes pseudoscalar A bosons with masses between 25 and 80 GeV, with SM-like Higgs boson negative couplings to down-type fermions, produced in association with bb pairs, in Type II, two-Higgs-doublet models. (C) 2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommonnorg/licensesiby/4.01).",
journal = "Physics Letters B",
title = "Search for a low-mass pseudoscalar Higgs boson produced in association with a b(b)over-bar pair in pp collisions at root s=8 TeV",
volume = "758",
pages = "296-320",
doi = "10.1016/j.physletb.2016.05.003"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for a low-mass pseudoscalar Higgs boson produced in association with a b(b)over-bar pair in pp collisions at root s=8 TeV. in Physics Letters B, 758, 296-320.
https://doi.org/10.1016/j.physletb.2016.05.003

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for a low-mass pseudoscalar Higgs boson produced in association with a b(b)over-bar pair in pp collisions at root s=8 TeV. in Physics Letters B. 2016;758:296-320.
doi:10.1016/j.physletb.2016.05.003 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for a low-mass pseudoscalar Higgs boson produced in association with a b(b)over-bar pair in pp collisions at root s=8 TeV" in Physics Letters B, 758 (2016):296-320,
https://doi.org/10.1016/j.physletb.2016.05.003 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1095
AB  - The t (t) over bar charge asymmetry is measured in proton-proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb(-1). Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010 +/- 0.0068 (stat)+/- 0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the If system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of -0.0035 +/- 0.0072 (stat) +/- 0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).
T2  - Physics Letters B
T1  - Inclusive and differential measurements of the t(t)over-bar charge asymmetry in pp collisions at root s=8 TeV
VL  - 757
SP  - 154
EP  - 179
DO  - 10.1016/j.physletb.2016.03.060
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "The t (t) over bar charge asymmetry is measured in proton-proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb(-1). Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010 +/- 0.0068 (stat)+/- 0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the If system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of -0.0035 +/- 0.0072 (stat) +/- 0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).",
journal = "Physics Letters B",
title = "Inclusive and differential measurements of the t(t)over-bar charge asymmetry in pp collisions at root s=8 TeV",
volume = "757",
pages = "154-179",
doi = "10.1016/j.physletb.2016.03.060"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Inclusive and differential measurements of the t(t)over-bar charge asymmetry in pp collisions at root s=8 TeV. in Physics Letters B, 757, 154-179.
https://doi.org/10.1016/j.physletb.2016.03.060

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Inclusive and differential measurements of the t(t)over-bar charge asymmetry in pp collisions at root s=8 TeV. in Physics Letters B. 2016;757:154-179.
doi:10.1016/j.physletb.2016.03.060 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Inclusive and differential measurements of the t(t)over-bar charge asymmetry in pp collisions at root s=8 TeV" in Physics Letters B, 757 (2016):154-179,
https://doi.org/10.1016/j.physletb.2016.03.060 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1094
AB  - The CP-violating weak phase phi(s) of the B-s(0) meson and the decay width difference Delta Gamma(s) of the B-s(0) light and heavy mass eigenstates are measured with the CMS detector at the LHC using a data sample of B-s(0)- GT J/psi phi(1020) - GT mu(+)mu-K+K- decays. The analysed data set corresponds to an integrated luminosity of 19.7 fb(-1) collected in pp collisions at a centre-of-mass energy of 8 TeV. A total of 49200 reconstructed B-s(0) decays are used to extract the values of phi(s) and Delta Gamma(s) by performing a time dependent and flavour-tagged angular analysis of the mu(+)mu-K+K- final state. The weak phase is measured to be phi(s) =-0.075 +/- 0.097 (stat) +/- 0.031 (syst) rad, and the decay width difference is Delta Gamma(s) = 0.095 +/- 0.013 (stat) +/- 0.007 (syst) ps(-1). (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).
T2  - Physics Letters B
T1  - Measurement of the CP-violating weak phase phi(s) and the decay width difference Delta Gamma(s) using the B-s(0) - GT J/psi phi (1020) decay channel in pp collisions at root s=8 TeV
VL  - 757
SP  - 97
EP  - 120
DO  - 10.1016/j.physletb.2016.03.046
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "The CP-violating weak phase phi(s) of the B-s(0) meson and the decay width difference Delta Gamma(s) of the B-s(0) light and heavy mass eigenstates are measured with the CMS detector at the LHC using a data sample of B-s(0)- GT J/psi phi(1020) - GT mu(+)mu-K+K- decays. The analysed data set corresponds to an integrated luminosity of 19.7 fb(-1) collected in pp collisions at a centre-of-mass energy of 8 TeV. A total of 49200 reconstructed B-s(0) decays are used to extract the values of phi(s) and Delta Gamma(s) by performing a time dependent and flavour-tagged angular analysis of the mu(+)mu-K+K- final state. The weak phase is measured to be phi(s) =-0.075 +/- 0.097 (stat) +/- 0.031 (syst) rad, and the decay width difference is Delta Gamma(s) = 0.095 +/- 0.013 (stat) +/- 0.007 (syst) ps(-1). (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).",
journal = "Physics Letters B",
title = "Measurement of the CP-violating weak phase phi(s) and the decay width difference Delta Gamma(s) using the B-s(0) - GT J/psi phi (1020) decay channel in pp collisions at root s=8 TeV",
volume = "757",
pages = "97-120",
doi = "10.1016/j.physletb.2016.03.046"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Measurement of the CP-violating weak phase phi(s) and the decay width difference Delta Gamma(s) using the B-s(0) - GT J/psi phi (1020) decay channel in pp collisions at root s=8 TeV. in Physics Letters B, 757, 97-120.
https://doi.org/10.1016/j.physletb.2016.03.046

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Measurement of the CP-violating weak phase phi(s) and the decay width difference Delta Gamma(s) using the B-s(0) - GT J/psi phi (1020) decay channel in pp collisions at root s=8 TeV. in Physics Letters B. 2016;757:97-120.
doi:10.1016/j.physletb.2016.03.046 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Measurement of the CP-violating weak phase phi(s) and the decay width difference Delta Gamma(s) using the B-s(0) - GT J/psi phi (1020) decay channel in pp collisions at root s=8 TeV" in Physics Letters B, 757 (2016):97-120,
https://doi.org/10.1016/j.physletb.2016.03.046 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1093
AB  - A search for supersymmetry involving events with at least one photon, one electron or muon, and large missing transverse momentum has been performed by the CMS experiment. The data sample corresponds to an integrated luminosity of 19.7 fb(-1) of pp collisions at root s = 8 TeV, produced at the CERN LHC. No excess of events is observed beyond expectations from standard model processes. The result of the search is interpreted in the context of a general model of gauge-mediated supersymmetry breaking, where the charged and neutral winos are the next-to-lightest supersymmetric particles. Within this model, winos with a mass up to 360 GeV are excluded at the 95% confidence level. Two simplified models inspired by gauge-mediated supersymmetry breaking are also examined, and used to derive upper limits on the production cross sections of specific supersymmetric processes. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.
T2  - Physics Letters B
T1  - Search for supersymmetry in events with a photon, a lepton, and missing transverse momentum in pp collisions at root s=8 TeV
VL  - 757
SP  - 6
EP  - 31
DO  - 10.1016/j.physletb.2016.03.039
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A search for supersymmetry involving events with at least one photon, one electron or muon, and large missing transverse momentum has been performed by the CMS experiment. The data sample corresponds to an integrated luminosity of 19.7 fb(-1) of pp collisions at root s = 8 TeV, produced at the CERN LHC. No excess of events is observed beyond expectations from standard model processes. The result of the search is interpreted in the context of a general model of gauge-mediated supersymmetry breaking, where the charged and neutral winos are the next-to-lightest supersymmetric particles. Within this model, winos with a mass up to 360 GeV are excluded at the 95% confidence level. Two simplified models inspired by gauge-mediated supersymmetry breaking are also examined, and used to derive upper limits on the production cross sections of specific supersymmetric processes. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.",
journal = "Physics Letters B",
title = "Search for supersymmetry in events with a photon, a lepton, and missing transverse momentum in pp collisions at root s=8 TeV",
volume = "757",
pages = "6-31",
doi = "10.1016/j.physletb.2016.03.039"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for supersymmetry in events with a photon, a lepton, and missing transverse momentum in pp collisions at root s=8 TeV. in Physics Letters B, 757, 6-31.
https://doi.org/10.1016/j.physletb.2016.03.039

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for supersymmetry in events with a photon, a lepton, and missing transverse momentum in pp collisions at root s=8 TeV. in Physics Letters B. 2016;757:6-31.
doi:10.1016/j.physletb.2016.03.039 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for supersymmetry in events with a photon, a lepton, and missing transverse momentum in pp collisions at root s=8 TeV" in Physics Letters B, 757 (2016):6-31,
https://doi.org/10.1016/j.physletb.2016.03.039 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1048
AB  - A search for a massive resonance decaying into a standard-model-like Higgs boson (H) and a W or Z boson is reported. The analysis is performed on a data sample corresponding to an integrated luminosity of 19.7 fb(-1), collected in proton-proton collisions at a centre-of-mass energy of 8 TeV with the CMS detector at the LHC. Signal events, in which the decay products of Higgs, W, or Z bosons at high Lorentz boost are contained within single reconstructed jets, are identified using jet substructure techniques, including the tagging of b hadrons. This is the first search for heavy resonances decaying into HW or HZ resulting in an all-jet final state, as well as the first application of jet substructure techniques to identify H - GT WW* - GT 4q decays at high Lorentz boost. No significant signal is observed and limits are set at 95% confidence level on the production cross sections of W and Z in a model with mass-degenerate charged and neutral spin-1 resonances. Resonance masses are excluded for W in the interval [1.0, 1.6] TeV, for Z in the intervals [1.0, 1.1] and [1.3, 1.5] TeV, and for mass-degenerate W and Z in the interval [1.0, 1.7] TeV.
T2  - Journal of High Energy Physics
T1  - Search for a massive resonance decaying into a Higgs boson and a W or Z boson in hadronic final states in proton-proton collisions at root s=8 TeV
IS  - 2
DO  - 10.1007/JHEP02(2016)145
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A search for a massive resonance decaying into a standard-model-like Higgs boson (H) and a W or Z boson is reported. The analysis is performed on a data sample corresponding to an integrated luminosity of 19.7 fb(-1), collected in proton-proton collisions at a centre-of-mass energy of 8 TeV with the CMS detector at the LHC. Signal events, in which the decay products of Higgs, W, or Z bosons at high Lorentz boost are contained within single reconstructed jets, are identified using jet substructure techniques, including the tagging of b hadrons. This is the first search for heavy resonances decaying into HW or HZ resulting in an all-jet final state, as well as the first application of jet substructure techniques to identify H - GT WW* - GT 4q decays at high Lorentz boost. No significant signal is observed and limits are set at 95% confidence level on the production cross sections of W and Z in a model with mass-degenerate charged and neutral spin-1 resonances. Resonance masses are excluded for W in the interval [1.0, 1.6] TeV, for Z in the intervals [1.0, 1.1] and [1.3, 1.5] TeV, and for mass-degenerate W and Z in the interval [1.0, 1.7] TeV.",
journal = "Journal of High Energy Physics",
title = "Search for a massive resonance decaying into a Higgs boson and a W or Z boson in hadronic final states in proton-proton collisions at root s=8 TeV",
number = "2",
doi = "10.1007/JHEP02(2016)145"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for a massive resonance decaying into a Higgs boson and a W or Z boson in hadronic final states in proton-proton collisions at root s=8 TeV. in Journal of High Energy Physics(2).
https://doi.org/10.1007/JHEP02(2016)145

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for a massive resonance decaying into a Higgs boson and a W or Z boson in hadronic final states in proton-proton collisions at root s=8 TeV. in Journal of High Energy Physics. 2016;(2).
doi:10.1007/JHEP02(2016)145 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for a massive resonance decaying into a Higgs boson and a W or Z boson in hadronic final states in proton-proton collisions at root s=8 TeV" in Journal of High Energy Physics, no. 2 (2016),
https://doi.org/10.1007/JHEP02(2016)145 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1047
AB  - A search is performed for the production of a massive W boson decaying to a top and a bottom quark. The data analysed correspond to an integrated luminosity of 19.71 fb(-1) collected with the CMS detector at the LHC in proton-proton collisions at root s = 8 TeV. The hadronic decay products of the top quark with high Lorentz boost from the W boson decay are detected as a single top flavoured jet. The use of jet substructure algorithms allows the top quark jet to be distinguished from standard model QCD background. Limits on the production cross section of a right-handed W boson are obtained, together with constraints on the left-handed and right-handed couplings of the W boson to quarks. The production of a right-handed W boson with a mass below 2.02 TeV decaying to a hadronic final state is excluded at 95% confidence level. This mass limit increases to 2.15 TeV when both hadronic and leptonic decays are considered, and is the most stringent lower mass limit to date in the tb decay mode.
T2  - Journal of High Energy Physics
T1  - Search for W - GT tb in proton-proton collisions at root s=8 TeV
IS  - 2
DO  - 10.1007/JHEP02(2016)122
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A search is performed for the production of a massive W boson decaying to a top and a bottom quark. The data analysed correspond to an integrated luminosity of 19.71 fb(-1) collected with the CMS detector at the LHC in proton-proton collisions at root s = 8 TeV. The hadronic decay products of the top quark with high Lorentz boost from the W boson decay are detected as a single top flavoured jet. The use of jet substructure algorithms allows the top quark jet to be distinguished from standard model QCD background. Limits on the production cross section of a right-handed W boson are obtained, together with constraints on the left-handed and right-handed couplings of the W boson to quarks. The production of a right-handed W boson with a mass below 2.02 TeV decaying to a hadronic final state is excluded at 95% confidence level. This mass limit increases to 2.15 TeV when both hadronic and leptonic decays are considered, and is the most stringent lower mass limit to date in the tb decay mode.",
journal = "Journal of High Energy Physics",
title = "Search for W - GT tb in proton-proton collisions at root s=8 TeV",
number = "2",
doi = "10.1007/JHEP02(2016)122"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for W - GT tb in proton-proton collisions at root s=8 TeV. in Journal of High Energy Physics(2).
https://doi.org/10.1007/JHEP02(2016)122

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for W - GT tb in proton-proton collisions at root s=8 TeV. in Journal of High Energy Physics. 2016;(2).
doi:10.1007/JHEP02(2016)122 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for W - GT tb in proton-proton collisions at root s=8 TeV" in Journal of High Energy Physics, no. 2 (2016),
https://doi.org/10.1007/JHEP02(2016)122 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/998
AB  - A measurement of the ratio of the branching fractions of the B-s(0) meson to J/psi f(0)(980) and to J/psi phi(1020) is presented. The J/psi, f(0)(980), and phi(1020) are observed through their decays to mu(+)mu(-), pi(+)pi(-), and K+K-, respectively. The f(0) and the phi are identified by requiring |M-pi+(pi)- - 974 MeV| LT 50 MeV and |M-K+(K)- - 1020 MeV| LT 10 MeV. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3fb(-1). The measured ratio is B(B-s(0) - GT J/psi f(0)) B(f(0) - GT pi(+)pi(-))/B(B-s(0) - GT J/psi phi) B(phi - GT K+K-)= 0.140 +/- 0.008 (stat) +/- 0.023 (syst), where the first uncertainty is statistical and the second is systematic. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license.
T2  - Physics Letters B
T1  - Measurement of the ratio B(B-s(0) - GT J/psi f(0)(980))/B(B-s(0) - GT J/psi phi(1020)) in pp collisions at root s=7 TeV
VL  - 756
SP  - 84
EP  - 102
DO  - 10.1016/j.physletb.2016.02.047
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A measurement of the ratio of the branching fractions of the B-s(0) meson to J/psi f(0)(980) and to J/psi phi(1020) is presented. The J/psi, f(0)(980), and phi(1020) are observed through their decays to mu(+)mu(-), pi(+)pi(-), and K+K-, respectively. The f(0) and the phi are identified by requiring |M-pi+(pi)- - 974 MeV| LT 50 MeV and |M-K+(K)- - 1020 MeV| LT 10 MeV. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3fb(-1). The measured ratio is B(B-s(0) - GT J/psi f(0)) B(f(0) - GT pi(+)pi(-))/B(B-s(0) - GT J/psi phi) B(phi - GT K+K-)= 0.140 +/- 0.008 (stat) +/- 0.023 (syst), where the first uncertainty is statistical and the second is systematic. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license.",
journal = "Physics Letters B",
title = "Measurement of the ratio B(B-s(0) - GT J/psi f(0)(980))/B(B-s(0) - GT J/psi phi(1020)) in pp collisions at root s=7 TeV",
volume = "756",
pages = "84-102",
doi = "10.1016/j.physletb.2016.02.047"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Measurement of the ratio B(B-s(0) - GT J/psi f(0)(980))/B(B-s(0) - GT J/psi phi(1020)) in pp collisions at root s=7 TeV. in Physics Letters B, 756, 84-102.
https://doi.org/10.1016/j.physletb.2016.02.047

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Measurement of the ratio B(B-s(0) - GT J/psi f(0)(980))/B(B-s(0) - GT J/psi phi(1020)) in pp collisions at root s=7 TeV. in Physics Letters B. 2016;756:84-102.
doi:10.1016/j.physletb.2016.02.047 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Measurement of the ratio B(B-s(0) - GT J/psi f(0)(980))/B(B-s(0) - GT J/psi phi(1020)) in pp collisions at root s=7 TeV" in Physics Letters B, 756 (2016):84-102,
https://doi.org/10.1016/j.physletb.2016.02.047 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/997
AB  - A search for a heavy scalar boson H decaying into a pair of lighter standard-model-like 125 GeV Higgs bosons hh and a search for a heavy pseudoscalar boson A decaying into a Z and an h boson are presented. The searches are performed on a data set corresponding to an integrated luminosity of 19.7 fb(-1) of pp collision data at a centre-of-mass energy of 8 TeV, collected by CMS in 2012. A final state consisting of two tau leptons and two b jets is used to search for the H - GT hh decay. A final state consisting of two tau leptons from the h boson decay, and two additional leptons from the Z boson decay, is used to search for the decay A - GT Zh. The results are interpreted in the context of two-Higgs-doublet models. No excess is found above the standard model expectation and upper limits are set on the heavy boson production cross sections in the mass ranges 260 LT m(H) LT 350 GeV and 220 LT m(A) LT 350 GeV. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.
PB  - Elsevier
T2  - Physics Letters B
T1  - Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h - GT tau tau
VL  - 755
SP  - 217
EP  - 244
DO  - 10.1016/j.physletb.2016.01.056
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A search for a heavy scalar boson H decaying into a pair of lighter standard-model-like 125 GeV Higgs bosons hh and a search for a heavy pseudoscalar boson A decaying into a Z and an h boson are presented. The searches are performed on a data set corresponding to an integrated luminosity of 19.7 fb(-1) of pp collision data at a centre-of-mass energy of 8 TeV, collected by CMS in 2012. A final state consisting of two tau leptons and two b jets is used to search for the H - GT hh decay. A final state consisting of two tau leptons from the h boson decay, and two additional leptons from the Z boson decay, is used to search for the decay A - GT Zh. The results are interpreted in the context of two-Higgs-doublet models. No excess is found above the standard model expectation and upper limits are set on the heavy boson production cross sections in the mass ranges 260 LT m(H) LT 350 GeV and 220 LT m(A) LT 350 GeV. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.",
publisher = "Elsevier",
journal = "Physics Letters B",
title = "Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h - GT tau tau",
volume = "755",
pages = "217-244",
doi = "10.1016/j.physletb.2016.01.056"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h - GT tau tau. in Physics Letters B
Elsevier., 755, 217-244.
https://doi.org/10.1016/j.physletb.2016.01.056

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h - GT tau tau. in Physics Letters B. 2016;755:217-244.
doi:10.1016/j.physletb.2016.01.056 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h - GT tau tau" in Physics Letters B, 755 (2016):217-244,
https://doi.org/10.1016/j.physletb.2016.01.056 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/996
AB  - The first search for a heavy charged vector boson in the final state with a tau lepton and a neutrino is reported, using 19.7 fb(-1) of LHC data at root s = 8 TeV. A signal would appear as an excess of events with high transverse mass, where the standard model background is low. No excess is observed. Limits are set on a model in which the W decays preferentially to fermions of the third generation. These results substantially extend previous constraints on this model. Masses below 2.0 to 2.7 TeV are excluded, depending on the model parameters. In addition, the existence of a W boson with universal fermion couplings is excluded at 95% confidence level, for W masses below 2.7 TeV. For further reinterpretation a model-independent limit on potential signals for various transverse mass thresholds is also presented. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license.
PB  - Elsevier
T2  - Physics Letters B
T1  - Search for W decaying to tau lepton and neutrino in proton-proton collisions at root s=8 TeV
VL  - 755
SP  - 196
EP  - 216
DO  - 10.1016/j.physletb.2016.02.002
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "The first search for a heavy charged vector boson in the final state with a tau lepton and a neutrino is reported, using 19.7 fb(-1) of LHC data at root s = 8 TeV. A signal would appear as an excess of events with high transverse mass, where the standard model background is low. No excess is observed. Limits are set on a model in which the W decays preferentially to fermions of the third generation. These results substantially extend previous constraints on this model. Masses below 2.0 to 2.7 TeV are excluded, depending on the model parameters. In addition, the existence of a W boson with universal fermion couplings is excluded at 95% confidence level, for W masses below 2.7 TeV. For further reinterpretation a model-independent limit on potential signals for various transverse mass thresholds is also presented. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license.",
publisher = "Elsevier",
journal = "Physics Letters B",
title = "Search for W decaying to tau lepton and neutrino in proton-proton collisions at root s=8 TeV",
volume = "755",
pages = "196-216",
doi = "10.1016/j.physletb.2016.02.002"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for W decaying to tau lepton and neutrino in proton-proton collisions at root s=8 TeV. in Physics Letters B
Elsevier., 755, 196-216.
https://doi.org/10.1016/j.physletb.2016.02.002

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for W decaying to tau lepton and neutrino in proton-proton collisions at root s=8 TeV. in Physics Letters B. 2016;755:196-216.
doi:10.1016/j.physletb.2016.02.002 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for W decaying to tau lepton and neutrino in proton-proton collisions at root s=8 TeV" in Physics Letters B, 755 (2016):196-216,
https://doi.org/10.1016/j.physletb.2016.02.002 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/995
AB  - Results are presented from a search for new physics in final states containing a photon and missing transverse momentum. The data correspond to an integrated luminosity of 19.6 fb(-1) collected in proton-proton collisions at root s = 8 TeV with the CMS experiment at the LHC. Nodeviation from the standard model predictions is observed for these final states. New, improved limits are set on dark matter production and on parameters of models with large extra dimensions. In particular, the first limits from the LHC on branon production are found and significantly extend previous limits from LEP and the Tevatron. An upper limit of 14.0 fb on the cross section is set at the 95% confidence level for events with a monophoton final state with photon transverse momentum greater than 145 GeV and missing transverse momentum greater than 140 GeV. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.
PB  - Elsevier
T2  - Physics Letters B
T1  - Search for new phenomena in monophoton final states in proton-proton collisions at root s=8 TeV
VL  - 755
SP  - 102
EP  - 124
DO  - 10.1016/j.physletb.2016.01.057
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "Results are presented from a search for new physics in final states containing a photon and missing transverse momentum. The data correspond to an integrated luminosity of 19.6 fb(-1) collected in proton-proton collisions at root s = 8 TeV with the CMS experiment at the LHC. Nodeviation from the standard model predictions is observed for these final states. New, improved limits are set on dark matter production and on parameters of models with large extra dimensions. In particular, the first limits from the LHC on branon production are found and significantly extend previous limits from LEP and the Tevatron. An upper limit of 14.0 fb on the cross section is set at the 95% confidence level for events with a monophoton final state with photon transverse momentum greater than 145 GeV and missing transverse momentum greater than 140 GeV. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.",
publisher = "Elsevier",
journal = "Physics Letters B",
title = "Search for new phenomena in monophoton final states in proton-proton collisions at root s=8 TeV",
volume = "755",
pages = "102-124",
doi = "10.1016/j.physletb.2016.01.057"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for new phenomena in monophoton final states in proton-proton collisions at root s=8 TeV. in Physics Letters B
Elsevier., 755, 102-124.
https://doi.org/10.1016/j.physletb.2016.01.057

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for new phenomena in monophoton final states in proton-proton collisions at root s=8 TeV. in Physics Letters B. 2016;755:102-124.
doi:10.1016/j.physletb.2016.01.057 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for new phenomena in monophoton final states in proton-proton collisions at root s=8 TeV" in Physics Letters B, 755 (2016):102-124,
https://doi.org/10.1016/j.physletb.2016.01.057 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/988
AB  - A search for compositeness of electrons and muons is presented using a data sample of proton-proton collisions at a center-of-mass energy of root s = 8TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb(-1). Excited leptons (l*) produced via contact interactions in conjunction with a standard model lepton are considered, and a search is made for their gauge decay modes. The decays considered are l* - GT l gamma and l* - GT lZ , which give final states of two leptons and a photon or, depending on the Z-boson decay mode, four leptons or two leptons and two jets. The number of events observed in data is consistent with the standard model prediction. Exclusion limits are set on the excited lepton mass, and the compositeness scale Lambda. For the case M-l* = Lambda the existence of excited electrons (muons) is excluded up to masses of 2.45 (2.47) TeV at 95% confidence level. Neutral current decays of excited leptons are considered for the first time, and limits are extended to include the possibility that the weight factors f and f, which determine the couplings between standard model leptons and excited leptons via gauge mediated interactions, have opposite sign.
T2  - Journal of High Energy Physics
T1  - Search for excited leptons in proton-proton collisions at root s=8 TeV
IS  - 3
DO  - 10.1007/JHEP03(2016)125
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A search for compositeness of electrons and muons is presented using a data sample of proton-proton collisions at a center-of-mass energy of root s = 8TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb(-1). Excited leptons (l*) produced via contact interactions in conjunction with a standard model lepton are considered, and a search is made for their gauge decay modes. The decays considered are l* - GT l gamma and l* - GT lZ , which give final states of two leptons and a photon or, depending on the Z-boson decay mode, four leptons or two leptons and two jets. The number of events observed in data is consistent with the standard model prediction. Exclusion limits are set on the excited lepton mass, and the compositeness scale Lambda. For the case M-l* = Lambda the existence of excited electrons (muons) is excluded up to masses of 2.45 (2.47) TeV at 95% confidence level. Neutral current decays of excited leptons are considered for the first time, and limits are extended to include the possibility that the weight factors f and f, which determine the couplings between standard model leptons and excited leptons via gauge mediated interactions, have opposite sign.",
journal = "Journal of High Energy Physics",
title = "Search for excited leptons in proton-proton collisions at root s=8 TeV",
number = "3",
doi = "10.1007/JHEP03(2016)125"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for excited leptons in proton-proton collisions at root s=8 TeV. in Journal of High Energy Physics(3).
https://doi.org/10.1007/JHEP03(2016)125

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for excited leptons in proton-proton collisions at root s=8 TeV. in Journal of High Energy Physics. 2016;(3).
doi:10.1007/JHEP03(2016)125 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for excited leptons in proton-proton collisions at root s=8 TeV" in Journal of High Energy Physics, no. 3 (2016),
https://doi.org/10.1007/JHEP03(2016)125 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/960
AB  - This paper describes the algorithms used by the CMS experiment to reconstruct and identify tau - GT hadrons + nu(tau) decays during Run 1 of the LHC. The performance of the algorithms is studied in proton-proton collisions recorded at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb(-1). The algorithms achieve an identification efficiency of 50-60%, with misidentification rates for quark and gluon jets, electrons, and muons between per mille and per cent levels.
T2  - Journal of Instrumentation
T1  - Reconstruction and identification of tau lepton decays to hadrons and nu(tau) at CMS
VL  - 11
DO  - 10.1088/1748-0221/11/01/P01019
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "This paper describes the algorithms used by the CMS experiment to reconstruct and identify tau - GT hadrons + nu(tau) decays during Run 1 of the LHC. The performance of the algorithms is studied in proton-proton collisions recorded at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb(-1). The algorithms achieve an identification efficiency of 50-60%, with misidentification rates for quark and gluon jets, electrons, and muons between per mille and per cent levels.",
journal = "Journal of Instrumentation",
title = "Reconstruction and identification of tau lepton decays to hadrons and nu(tau) at CMS",
volume = "11",
doi = "10.1088/1748-0221/11/01/P01019"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Reconstruction and identification of tau lepton decays to hadrons and nu(tau) at CMS. in Journal of Instrumentation, 11.
https://doi.org/10.1088/1748-0221/11/01/P01019

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Reconstruction and identification of tau lepton decays to hadrons and nu(tau) at CMS. in Journal of Instrumentation. 2016;11.
doi:10.1088/1748-0221/11/01/P01019 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Reconstruction and identification of tau lepton decays to hadrons and nu(tau) at CMS" in Journal of Instrumentation, 11 (2016),
https://doi.org/10.1088/1748-0221/11/01/P01019 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/951
AB  - A search is presented for the production of both first- and second-generation scalar leptoquarks with a final state of either two electrons and one jet or two muons and one jet. The search is based on a data sample of proton-proton collisions at center-of-mass energy root s = 8 TeV recorded with the CMS detector and corresponding to an integrated luminosity of 19.6 fb(-1). Upper limits are set on both the first- and second-generation leptoquark production cross sections as functions of the leptoquark mass and the leptoquark couplings to a lepton and a quark. Results are compared with theoretical predictions to obtain lower limits on the leptoquark mass. At 95% confidence level, single production of first- generation leptoquarks with a coupling and branching fraction of 1.0 is excluded for masses below 1730 GeV, and second-generation leptoquarks with a coupling and branching fraction of 1.0 is excluded for masses below 530 GeV. These are the best overall limits on the production of first-generation leptoquarks to date.
T2  - Physical Review D
T1  - Search for single production of scalar leptoquarks in proton-proton collisions at root s=8 TeV
VL  - 93
IS  - 3
DO  - 10.1103/PhysRevD.93.032005
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A search is presented for the production of both first- and second-generation scalar leptoquarks with a final state of either two electrons and one jet or two muons and one jet. The search is based on a data sample of proton-proton collisions at center-of-mass energy root s = 8 TeV recorded with the CMS detector and corresponding to an integrated luminosity of 19.6 fb(-1). Upper limits are set on both the first- and second-generation leptoquark production cross sections as functions of the leptoquark mass and the leptoquark couplings to a lepton and a quark. Results are compared with theoretical predictions to obtain lower limits on the leptoquark mass. At 95% confidence level, single production of first- generation leptoquarks with a coupling and branching fraction of 1.0 is excluded for masses below 1730 GeV, and second-generation leptoquarks with a coupling and branching fraction of 1.0 is excluded for masses below 530 GeV. These are the best overall limits on the production of first-generation leptoquarks to date.",
journal = "Physical Review D",
title = "Search for single production of scalar leptoquarks in proton-proton collisions at root s=8 TeV",
volume = "93",
number = "3",
doi = "10.1103/PhysRevD.93.032005"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for single production of scalar leptoquarks in proton-proton collisions at root s=8 TeV. in Physical Review D, 93(3).
https://doi.org/10.1103/PhysRevD.93.032005

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for single production of scalar leptoquarks in proton-proton collisions at root s=8 TeV. in Physical Review D. 2016;93(3).
doi:10.1103/PhysRevD.93.032005 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for single production of scalar leptoquarks in proton-proton collisions at root s=8 TeV" in Physical Review D, 93, no. 3 (2016),
https://doi.org/10.1103/PhysRevD.93.032005 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/950
AB  - A search for pair production of first and second generation leptoquarks is performed in final states containing either two charged leptons and two jets, or one charged lepton, one neutrino and two jets, using proton-proton collision data at root s = 8 TeV. The data, corresponding to an integrated luminosity of 19.7 fb(-1), were recorded with the CMS detector at the LHC. First-generation scalar leptoquarks with masses less than 1010 (850) GeV are excluded for beta = 1.0 (0.5), where beta is the branching fraction of a leptoquark decaying to a charged lepton and a quark. Similarly, second-generation scalar leptoquarks with masses less than 1080 (760) GeV are excluded for beta = 1.0 (0.5). Mass limits are also set for vector leptoquark production scenarios with anomalous vector couplings, and for R-parity violating supersymmetric scenarios of top squark pair production resulting in similar final-state signatures. These are the most stringent limits placed on the masses of vector leptoquarks and RPV top squarks to date.
T2  - Physical Review D
T1  - Search for pair production of first and second generation leptoquarks in proton-proton collisions at root s=8 TeV
VL  - 93
IS  - 3
DO  - 10.1103/PhysRevD.93.032004
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "A search for pair production of first and second generation leptoquarks is performed in final states containing either two charged leptons and two jets, or one charged lepton, one neutrino and two jets, using proton-proton collision data at root s = 8 TeV. The data, corresponding to an integrated luminosity of 19.7 fb(-1), were recorded with the CMS detector at the LHC. First-generation scalar leptoquarks with masses less than 1010 (850) GeV are excluded for beta = 1.0 (0.5), where beta is the branching fraction of a leptoquark decaying to a charged lepton and a quark. Similarly, second-generation scalar leptoquarks with masses less than 1080 (760) GeV are excluded for beta = 1.0 (0.5). Mass limits are also set for vector leptoquark production scenarios with anomalous vector couplings, and for R-parity violating supersymmetric scenarios of top squark pair production resulting in similar final-state signatures. These are the most stringent limits placed on the masses of vector leptoquarks and RPV top squarks to date.",
journal = "Physical Review D",
title = "Search for pair production of first and second generation leptoquarks in proton-proton collisions at root s=8 TeV",
volume = "93",
number = "3",
doi = "10.1103/PhysRevD.93.032004"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for pair production of first and second generation leptoquarks in proton-proton collisions at root s=8 TeV. in Physical Review D, 93(3).
https://doi.org/10.1103/PhysRevD.93.032004

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for pair production of first and second generation leptoquarks in proton-proton collisions at root s=8 TeV. in Physical Review D. 2016;93(3).
doi:10.1103/PhysRevD.93.032004 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for pair production of first and second generation leptoquarks in proton-proton collisions at root s=8 TeV" in Physical Review D, 93, no. 3 (2016),
https://doi.org/10.1103/PhysRevD.93.032004 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/947
AB  - The charge asymmetry in the production of top quark and antiquark pairs is measured in proton-proton collisions at a center-of-mass energy of 8 TeV. The data, corresponding to an integrated luminosity of 19.6 fb(-1), were collected by the CMS experiment at the LHC. Events with a single isolated electron or muon, and four or more jets, at least one of which is likely to have originated from hadronization of a bottom quark, are selected. A template technique is used to measure the asymmetry in the distribution of differences in the top quark and antiquark absolute rapidities. The measured asymmetry is A(c)(y) = [0.33 +/- 0.26(stat) +/- 0.33(syst)]%, which is the most precise result to date. The results are compared to calculations based on the standard model and on several beyond-the-standard-model scenarios.
T2  - Physical Review D
T1  - Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=8 TeV using a template method
VL  - 93
IS  - 3
DO  - 10.1103/PhysRevD.93.034014
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "The charge asymmetry in the production of top quark and antiquark pairs is measured in proton-proton collisions at a center-of-mass energy of 8 TeV. The data, corresponding to an integrated luminosity of 19.6 fb(-1), were collected by the CMS experiment at the LHC. Events with a single isolated electron or muon, and four or more jets, at least one of which is likely to have originated from hadronization of a bottom quark, are selected. A template technique is used to measure the asymmetry in the distribution of differences in the top quark and antiquark absolute rapidities. The measured asymmetry is A(c)(y) = [0.33 +/- 0.26(stat) +/- 0.33(syst)]%, which is the most precise result to date. The results are compared to calculations based on the standard model and on several beyond-the-standard-model scenarios.",
journal = "Physical Review D",
title = "Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=8 TeV using a template method",
volume = "93",
number = "3",
doi = "10.1103/PhysRevD.93.034014"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=8 TeV using a template method. in Physical Review D, 93(3).
https://doi.org/10.1103/PhysRevD.93.034014

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=8 TeV using a template method. in Physical Review D. 2016;93(3).
doi:10.1103/PhysRevD.93.034014 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=8 TeV using a template method" in Physical Review D, 93, no. 3 (2016),
https://doi.org/10.1103/PhysRevD.93.034014 . .

TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/943
AB  - Measurements of the cross sections for top quark pairs produced in association with a W or Z boson are presented, using 8 TeV pp collision data corresponding to an integrated luminosity of 19.5 fb(-1), collected by the CMS experiment at the LHC. Final states are selected in which the associated W boson decays to a charged lepton and a neutrino or the Z boson decays to two charged leptons. Signal events are identified by matching reconstructed objects in the detector to specific final state particles from t (t) over barW or t (t) over barZ decays. The t (t) over barW cross section is measured to be 382(-102)(+117) fb with a significance of 4.8 standard deviations from the background-only hypothesis. The t (t) over barZ cross section is measured to be 242(-55)(+65) fb with a significance of 6.4 standard deviations from the background-only hypothesis. These measurements are used to set bounds on five anomalous dimension-six operators that would affect the t (t) over barW and t (t) over barZ cross sections.
T2  - Journal of High Energy Physics
T1  - Observation of top quark pairs produced in association with a vector boson in pp collisions at root s=8 TeV
IS  - 1
DO  - 10.1007/JHEP01(2016)096
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2016",
abstract = "Measurements of the cross sections for top quark pairs produced in association with a W or Z boson are presented, using 8 TeV pp collision data corresponding to an integrated luminosity of 19.5 fb(-1), collected by the CMS experiment at the LHC. Final states are selected in which the associated W boson decays to a charged lepton and a neutrino or the Z boson decays to two charged leptons. Signal events are identified by matching reconstructed objects in the detector to specific final state particles from t (t) over barW or t (t) over barZ decays. The t (t) over barW cross section is measured to be 382(-102)(+117) fb with a significance of 4.8 standard deviations from the background-only hypothesis. The t (t) over barZ cross section is measured to be 242(-55)(+65) fb with a significance of 6.4 standard deviations from the background-only hypothesis. These measurements are used to set bounds on five anomalous dimension-six operators that would affect the t (t) over barW and t (t) over barZ cross sections.",
journal = "Journal of High Energy Physics",
title = "Observation of top quark pairs produced in association with a vector boson in pp collisions at root s=8 TeV",
number = "1",
doi = "10.1007/JHEP01(2016)096"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Observation of top quark pairs produced in association with a vector boson in pp collisions at root s=8 TeV. in Journal of High Energy Physics(1).
https://doi.org/10.1007/JHEP01(2016)096

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Observation of top quark pairs produced in association with a vector boson in pp collisions at root s=8 TeV. in Journal of High Energy Physics. 2016;(1).
doi:10.1007/JHEP01(2016)096 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Observation of top quark pairs produced in association with a vector boson in pp collisions at root s=8 TeV" in Journal of High Energy Physics, no. 1 (2016),
https://doi.org/10.1007/JHEP01(2016)096 . .