Simic, Lj

TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Bozic, I.
AU  - Dimitrievska, A.
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Marjanovic, M.
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/660
AB  - This Letter reports evidence of triple gauge boson production pp - GT W(l nu)gamma gamma + X, which is accessible for the first time with the 8 TeV LHC data set. The fiducial cross section for this process is measured in a data sample corresponding to an integrated luminosity of 20.3 fb(-1), collected by the ATLAS detector in 2012. Events are selected using the W boson decay to e nu or mu nu as well as requiring two isolated photons. The measured cross section is used to set limits on anomalous quartic gauge couplings in the high diphoton mass region.
T2  - Physical Review Letters
T1  - Evidence of W gamma gamma Production in pp Collisions at root s=8 TeV and Limits on Anomalous Quartic Gauge Couplings with the ATLAS Detector
VL  - 115
IS  - 3
DO  - 10.1103/PhysRevLett.115.031802
ER  - 

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Bozic, I. and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanovic, M. and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/660",
abstract = "This Letter reports evidence of triple gauge boson production pp - GT W(l nu)gamma gamma + X, which is accessible for the first time with the 8 TeV LHC data set. The fiducial cross section for this process is measured in a data sample corresponding to an integrated luminosity of 20.3 fb(-1), collected by the ATLAS detector in 2012. Events are selected using the W boson decay to e nu or mu nu as well as requiring two isolated photons. The measured cross section is used to set limits on anomalous quartic gauge couplings in the high diphoton mass region.",
journal = "Physical Review Letters",
title = "Evidence of W gamma gamma Production in pp Collisions at root s=8 TeV and Limits on Anomalous Quartic Gauge Couplings with the ATLAS Detector",
volume = "115",
number = "3",
doi = "10.1103/PhysRevLett.115.031802"
}

TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Bozic, I.
AU  - Dimitrievska, A.
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Marjanovic, M.
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/590
AB  - A search is presented for narrow diboson resonances decaying to WW or WZ in the final state where one W boson decays leptonically (to an electron or a muon plus a neutrino) and the other W/Z boson decays hadronically. The analysis is performed using an integrated luminosity of 20.3 fb(-1) of pp collisions at root s = 8 TeV collected by the ATLAS detector at the large hadron collider. No evidence for resonant diboson production is observed, and resonance masses below 700 and 1490 GeV are excluded at 95 % confidence level for the spin-2 Randall-Sundrum bulk graviton G* with coupling constant of 1.0 and the extended gauge model W boson respectively.
T2  - European Physical Journal C. Particles and Fields
T1  - Search for production of WW/WZ resonances decaying to a lepton, neutrino and jets in pp collisions at root s=8 TeV with the ATLAS detector
VL  - 75
IS  - 5
DO  - 10.1140/epjc/s10052-015-3425-6
ER  - 

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Bozic, I. and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanovic, M. and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/590",
abstract = "A search is presented for narrow diboson resonances decaying to WW or WZ in the final state where one W boson decays leptonically (to an electron or a muon plus a neutrino) and the other W/Z boson decays hadronically. The analysis is performed using an integrated luminosity of 20.3 fb(-1) of pp collisions at root s = 8 TeV collected by the ATLAS detector at the large hadron collider. No evidence for resonant diboson production is observed, and resonance masses below 700 and 1490 GeV are excluded at 95 % confidence level for the spin-2 Randall-Sundrum bulk graviton G* with coupling constant of 1.0 and the extended gauge model W boson respectively.",
journal = "European Physical Journal C. Particles and Fields",
title = "Search for production of WW/WZ resonances decaying to a lepton, neutrino and jets in pp collisions at root s=8 TeV with the ATLAS detector",
volume = "75",
number = "5",
doi = "10.1140/epjc/s10052-015-3425-6"
}

TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Ćirković, Predrag
AU  - Dimitrievska, A.
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Marjanovic, M.
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/587
AB  - A search for a massive W gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The datasetwas taken at a centre-of-mass energy of root s = 8 TeV and corresponds to 20.3 fb(-1) of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W bosons in the range 1.5-3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95% confidence level are set on the W - GT tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W bosons, and ranging from 0.10 pb to 0.21 pb for W bosons with purely righthanded couplings. Upper limits at 95% confidence level are set on the W-boson coupling to tb as a function of the W mass using an effective field theory approach, which is independent of details of particular models predicting a W boson.
T2  - European Physical Journal C. Particles and Fields
T1  - Search for W - GT tb - GT qqbb decays in pp collisions at root s=8 TeV with the ATLAS detector
VL  - 75
IS  - 4
DO  - 10.1140/epjc/s10052-015-3372-2
ER  - 

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Ćirković, Predrag and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanovic, M. and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/587",
abstract = "A search for a massive W gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The datasetwas taken at a centre-of-mass energy of root s = 8 TeV and corresponds to 20.3 fb(-1) of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W bosons in the range 1.5-3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95% confidence level are set on the W - GT tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W bosons, and ranging from 0.10 pb to 0.21 pb for W bosons with purely righthanded couplings. Upper limits at 95% confidence level are set on the W-boson coupling to tb as a function of the W mass using an effective field theory approach, which is independent of details of particular models predicting a W boson.",
journal = "European Physical Journal C. Particles and Fields",
title = "Search for W - GT tb - GT qqbb decays in pp collisions at root s=8 TeV with the ATLAS detector",
volume = "75",
number = "4",
doi = "10.1140/epjc/s10052-015-3372-2"
}

TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Bozic, I.
AU  - Dimitrievska, A.
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Marjanovic, M.
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/674
AB  - A search for the Standard Model Higgs boson produced in association with a top-quark pair, , is presented. The analysis uses 20.3 fb(-1) of pp collision data at , collected with the ATLAS detector at the Large Hadron Collider during 2012. The search is designed for the decay mode and uses events containing one or two electrons or muons. In order to improve the sensitivity of the search, events are categorised according to their jet and b-tagged jet multiplicities. A neural network is used to discriminate between signal and background events, the latter being dominated by +jets production. In the single-lepton channel, variables calculated using a matrix element method are included as inputs to the neural network to improve discrimination of the irreducible background. No significant excess of events above the background expectation is found and an observed (expected) limit of 3.4 (2.2) times the Standard Model cross section is obtained at 95 % confidence level. The ratio of the measured signal cross section to the Standard Model expectation is found to be assuming a Higgs boson mass of 125 Gev.
T2  - European Physical Journal C. Particles and Fields
T1  - Search for the Standard Model Higgs boson produced in association with top quarks and decaying into in collisions at with the ATLAS detector
VL  - 75
IS  - 7
DO  - 10.1140/epjc/s10052-015-3543-1
ER  - 

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Bozic, I. and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanovic, M. and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/674",
abstract = "A search for the Standard Model Higgs boson produced in association with a top-quark pair, , is presented. The analysis uses 20.3 fb(-1) of pp collision data at , collected with the ATLAS detector at the Large Hadron Collider during 2012. The search is designed for the decay mode and uses events containing one or two electrons or muons. In order to improve the sensitivity of the search, events are categorised according to their jet and b-tagged jet multiplicities. A neural network is used to discriminate between signal and background events, the latter being dominated by +jets production. In the single-lepton channel, variables calculated using a matrix element method are included as inputs to the neural network to improve discrimination of the irreducible background. No significant excess of events above the background expectation is found and an observed (expected) limit of 3.4 (2.2) times the Standard Model cross section is obtained at 95 % confidence level. The ratio of the measured signal cross section to the Standard Model expectation is found to be assuming a Higgs boson mass of 125 Gev.",
journal = "European Physical Journal C. Particles and Fields",
title = "Search for the Standard Model Higgs boson produced in association with top quarks and decaying into in collisions at with the ATLAS detector",
volume = "75",
number = "7",
doi = "10.1140/epjc/s10052-015-3543-1"
}

@misc{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Ćirković, Predrag and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanovic, M. and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/750",
abstract = "It was found that the non-perturbative corrections calculated using Pythia with the Perugia 2011 tune did not include the effect of the underlying event. The affected correction factors were recomputed using the Pythia 6.427 generator. These corrections are applied as baseline to the NLO pQCD calculations and thus the central values of the theoretical predictions have changed by a few percent with the new corrections. This has a minor impact on the agreement between the data and the theoretical predictions. Figures 2 and 6 to 13, and all the tables have been updated with the new values. A few sentences in the discussion in sections 5.2 and 9 were altered or removed.",
journal = "Journal of High Energy Physics",
title = "Measurement of the inclusive jet cross-section in proton-proton collisions at root s = 7 TeV using 4.5 fb(-1) of data with the ATLAS detector (vol 2, 153, 2015)",
number = "9",
doi = "10.1007/JHEP09(2015)141"
}

TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Dimitrievska, A.
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5921
AB  - This Letter presents a search for quantum black-hole production using 20.3 fb(-1) of data collected with the ATLAS detector in pp collisions at the LHC at root s = 8 TeV. The quantum black holes are assumed to decay into a final state characterized by a lepton (electron or muon) and a jet. In either channel, no event with a lepton-jet invariant mass of 3.5 TeV or more is observed, consistent with the expected background. Limits are set on the product of cross sections and branching fractions for the lepton + jet final states of quantum black holes produced in a search region for invariant masses above 1 TeV. The combined 95% confidence level upper limit on this product for quantum black holes with threshold mass above 3.5 TeV is 0.18 fb. This limit constrains the threshold quantum black-hole mass to be above 5.3 TeV in the model considered.
T2  - Physical Review Letters
T1  - Search for Quantum Black Hole Production in High-Invariant-Mass Lepton plus Jet Final States Using pp Collisions at root s=8 TeV and the ATLAS Detector
VL  - 112
IS  - 9
DO  - 10.1103/PhysRevLett.112.091804
ER  - 

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2014",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5921",
abstract = "This Letter presents a search for quantum black-hole production using 20.3 fb(-1) of data collected with the ATLAS detector in pp collisions at the LHC at root s = 8 TeV. The quantum black holes are assumed to decay into a final state characterized by a lepton (electron or muon) and a jet. In either channel, no event with a lepton-jet invariant mass of 3.5 TeV or more is observed, consistent with the expected background. Limits are set on the product of cross sections and branching fractions for the lepton + jet final states of quantum black holes produced in a search region for invariant masses above 1 TeV. The combined 95% confidence level upper limit on this product for quantum black holes with threshold mass above 3.5 TeV is 0.18 fb. This limit constrains the threshold quantum black-hole mass to be above 5.3 TeV in the model considered.",
journal = "Physical Review Letters",
title = "Search for Quantum Black Hole Production in High-Invariant-Mass Lepton plus Jet Final States Using pp Collisions at root s=8 TeV and the ATLAS Detector",
volume = "112",
number = "9",
doi = "10.1103/PhysRevLett.112.091804"
}

TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Ćirković, Predrag
AU  - Dimitrievska, A.
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Marjanovic, M.
AU  - Popovic, D. S.
AU  - Sijacki, Dj.
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/330
AB  - A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton-proton collision dataset recorded by the ATLAS detector is used, corresponding to 20 fb(-1) at root s = 8 TeV. The dilepton invariant mass spectrum is a discriminating variable in both searches, with the contact interaction search additionally utilizing the dilepton forward-backward asymmetry. No significant deviations from the Standard Model expectation are observed. Lower limits are set on the llqq contact interaction scale Lambda between 15.4 TeVand 26.3 TeV, at the 95% credibility level. For large extra spatial dimensions, lower limits are set on the string scale MS between 3.2 TeV to 5.0 TeV.
T2  - European Physical Journal C. Particles and Fields
T1  - Search for contact interactions and large extra dimensions in the dilepton channel using proton-proton collisions at root s=8 TeV with the ATLAS detector
VL  - 74
IS  - 12
DO  - 10.1140/epjc/s10052-014-3134-6
ER  - 

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Ćirković, Predrag and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanovic, M. and Popovic, D. S. and Sijacki, Dj. and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija",
year = "2014",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/330",
abstract = "A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton-proton collision dataset recorded by the ATLAS detector is used, corresponding to 20 fb(-1) at root s = 8 TeV. The dilepton invariant mass spectrum is a discriminating variable in both searches, with the contact interaction search additionally utilizing the dilepton forward-backward asymmetry. No significant deviations from the Standard Model expectation are observed. Lower limits are set on the llqq contact interaction scale Lambda between 15.4 TeVand 26.3 TeV, at the 95% credibility level. For large extra spatial dimensions, lower limits are set on the string scale MS between 3.2 TeV to 5.0 TeV.",
journal = "European Physical Journal C. Particles and Fields",
title = "Search for contact interactions and large extra dimensions in the dilepton channel using proton-proton collisions at root s=8 TeV with the ATLAS detector",
volume = "74",
number = "12",
doi = "10.1140/epjc/s10052-014-3134-6"
}

TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Dimitrievska, A.
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/309
AB  - This paper presents a measurement of the cross-section for high transverse momentum W and Z bosons produced in pp collisions and decaying to allhadronic final states. The data used in the analysis were recorded by the ATLAS detector at the CERN Large Hadron Collider at a centre-of-mass energy of root s = 7 TeV and correspond to an integrated luminosity of 4.6 fb(-1). The measurement is performed by reconstructing the boosted W or Z bosons in single jets. The reconstructed jet mass is used to identify the W and Z bosons, and a jet substructure method based on energy cluster information in the jet centre-ofmass frame is used to suppress the large multi-jet background. The cross-section for events with a hadronically decaying W or Z boson, with transverse momentum p(T) GT 320 GeV and pseudorapidity |eta| LT 1.9, is measured to be sigma W+ Z= 8.5 +/- 1.7 pb and is compared to next-to-leading-order calculations. The selected events are further used to study jet grooming techniques.This paper presents a measurement of the cross-section for high transverse momentum W and Z bosons produced in pp collisions and decaying to allhadronic final states. The data used in the analysis were recorded by the ATLAS detector at the CERN Large Hadron Collider at a centre-of-mass energy of root s = 7 TeV and correspond to an integrated luminosity of 4.6 fb(-1). The measurement is performed by reconstructing the boosted W or Z bosons in single jets. The reconstructed jet mass is used to identify the W and Z bosons, and a jet substructure method based on energy cluster information in the jet centre-ofmass frame is used to suppress the large multi-jet background. The cross-section for events with a hadronically decaying W or Z boson, with transverse momentum p(T) GT 320 GeV and pseudorapidity |eta| LT 1.9, is measured to be sigma W+ Z= 8.5 +/- 1.7 pb and is compared to next-to-leading-order calculations. The selected events are further used to study jet grooming techniques.
T2  - New Journal of Physics
T1  - Measurement of the cross-section of high transverse momentum vector bosons reconstructed as single jets and studies of jet substructure in pp collisions at root s=7TeV with the ATLAS detector
VL  - 16
DO  - 10.1088/1367-2630/16/11/113013
ER  - 

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija",
year = "2014",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/309",
abstract = "This paper presents a measurement of the cross-section for high transverse momentum W and Z bosons produced in pp collisions and decaying to allhadronic final states. The data used in the analysis were recorded by the ATLAS detector at the CERN Large Hadron Collider at a centre-of-mass energy of root s = 7 TeV and correspond to an integrated luminosity of 4.6 fb(-1). The measurement is performed by reconstructing the boosted W or Z bosons in single jets. The reconstructed jet mass is used to identify the W and Z bosons, and a jet substructure method based on energy cluster information in the jet centre-ofmass frame is used to suppress the large multi-jet background. The cross-section for events with a hadronically decaying W or Z boson, with transverse momentum p(T) GT 320 GeV and pseudorapidity |eta| LT 1.9, is measured to be sigma W+ Z= 8.5 +/- 1.7 pb and is compared to next-to-leading-order calculations. The selected events are further used to study jet grooming techniques.This paper presents a measurement of the cross-section for high transverse momentum W and Z bosons produced in pp collisions and decaying to allhadronic final states. The data used in the analysis were recorded by the ATLAS detector at the CERN Large Hadron Collider at a centre-of-mass energy of root s = 7 TeV and correspond to an integrated luminosity of 4.6 fb(-1). The measurement is performed by reconstructing the boosted W or Z bosons in single jets. The reconstructed jet mass is used to identify the W and Z bosons, and a jet substructure method based on energy cluster information in the jet centre-ofmass frame is used to suppress the large multi-jet background. The cross-section for events with a hadronically decaying W or Z boson, with transverse momentum p(T) GT 320 GeV and pseudorapidity |eta| LT 1.9, is measured to be sigma W+ Z= 8.5 +/- 1.7 pb and is compared to next-to-leading-order calculations. The selected events are further used to study jet grooming techniques.",
journal = "New Journal of Physics",
title = "Measurement of the cross-section of high transverse momentum vector bosons reconstructed as single jets and studies of jet substructure in pp collisions at root s=7TeV with the ATLAS detector",
volume = "16",
doi = "10.1088/1367-2630/16/11/113013"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj.
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5608
AB  - This paper presents a summary of beam-induced backgrounds observed in the ATLAS detector and discusses methods to tag and remove background contaminated events in data. Trigger-rate based monitoring of beam-related backgrounds is presented. The correlations of backgrounds with machine conditions, such as residual pressure in the beam-pipe, are discussed. Results from dedicated beam-background simulations are shown, and their qualitative agreement with data is evaluated. Data taken during the passage of unpaired, i.e. non-colliding, proton bunches is used to obtain background-enriched data samples. These are used to identify characteristic features of beam-induced backgrounds, which then are exploited to develop dedicated background tagging tools. These tools, based on observables in the Pixel detector, the muon spectrometer and the calorimeters, are described in detail and their efficiencies are evaluated. Finally an example of an application of these techniques to a monojet analysis is given, which demonstrates the importance of such event cleaning techniques for some new physics searches.
T2  - Journal of Instrumentation
T1  - Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
VL  - 8
DO  - 10.1088/1748-0221/8/07/P07004
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj. and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5608",
abstract = "This paper presents a summary of beam-induced backgrounds observed in the ATLAS detector and discusses methods to tag and remove background contaminated events in data. Trigger-rate based monitoring of beam-related backgrounds is presented. The correlations of backgrounds with machine conditions, such as residual pressure in the beam-pipe, are discussed. Results from dedicated beam-background simulations are shown, and their qualitative agreement with data is evaluated. Data taken during the passage of unpaired, i.e. non-colliding, proton bunches is used to obtain background-enriched data samples. These are used to identify characteristic features of beam-induced backgrounds, which then are exploited to develop dedicated background tagging tools. These tools, based on observables in the Pixel detector, the muon spectrometer and the calorimeters, are described in detail and their efficiencies are evaluated. Finally an example of an application of these techniques to a monojet analysis is given, which demonstrates the importance of such event cleaning techniques for some new physics searches.",
journal = "Journal of Instrumentation",
title = "Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run",
volume = "8",
doi = "10.1088/1748-0221/8/07/P07004"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Milutinović-Dumbelović, Gordana
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5389
AB  - The production of W bosons in association with two jets in proton-proton collisions at a centre-of-mass energy of root s = 7 TeV has been analysed for the presence of double-parton interactions using data corresponding to an integrated luminosity of 36 pb(-1), collected with the ATLAS detector at the Large Hadron Collider. The fraction of events arising from double-parton interactions, f(DP)((D)), has been measured through the p(T) balance between the two jets and amounts to f(DP)((D)) = 0.08 +/- 0.01 (stat.) +/- 0.02 (sys.) for jets with transverse momentum p(T) GT 20 GeV and rapidity vertical bar y vertical bar LT 2.8. This corresponds to a measurement of the effective area parameter for hard double-parton interactions of sigma(eff) = 15 +/- 3 (stat.)(-3)(+5) (sys.) mb.
T2  - New Journal of Physics
T1  - Measurement of hard double-parton interactions in W(- GT lv) plus 2-jet events at root s=7 TeV with the ATLAS detector
VL  - 15
DO  - 10.1088/1367-2630/15/3/033038
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Milutinović-Dumbelović, Gordana and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5389",
abstract = "The production of W bosons in association with two jets in proton-proton collisions at a centre-of-mass energy of root s = 7 TeV has been analysed for the presence of double-parton interactions using data corresponding to an integrated luminosity of 36 pb(-1), collected with the ATLAS detector at the Large Hadron Collider. The fraction of events arising from double-parton interactions, f(DP)((D)), has been measured through the p(T) balance between the two jets and amounts to f(DP)((D)) = 0.08 +/- 0.01 (stat.) +/- 0.02 (sys.) for jets with transverse momentum p(T) GT 20 GeV and rapidity vertical bar y vertical bar LT 2.8. This corresponds to a measurement of the effective area parameter for hard double-parton interactions of sigma(eff) = 15 +/- 3 (stat.)(-3)(+5) (sys.) mb.",
journal = "New Journal of Physics",
title = "Measurement of hard double-parton interactions in W(- GT lv) plus 2-jet events at root s=7 TeV with the ATLAS detector",
volume = "15",
doi = "10.1088/1367-2630/15/3/033038"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Milutinović-Dumbelović, Gordana
AU  - Popovic, D. S.
AU  - Sijackia, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5404
AB  - A search is performed for WH production with a light Higgs boson decaying to hidden-sector particles resulting in clusters of collimated electrons, known as electron-jets. The search is performed with 2.04 fb(-1) of data collected in 2011 with the ATLAS detector at the Large Hadron Collider in proton-proton collisions at root s = 7 TeV. One event satisfying the signal selection criteria is observed, which is consistent with the expected background rate. Limits on the product of the WH production cross section and the branching ratio of a Higgs boson decaying to prompt electron-jets are calculated as a function of a Higgs boson mass in the range from 100 to 140 GeV.
T2  - New Journal of Physics
T1  - Search for WH production with a light Higgs boson decaying to prompt electron-jets in proton-proton collisions at root s=7 TeV with the ATLAS detector
VL  - 15
DO  - 10.1088/1367-2630/15/4/043009
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Milutinović-Dumbelović, Gordana and Popovic, D. S. and Sijackia, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5404",
abstract = "A search is performed for WH production with a light Higgs boson decaying to hidden-sector particles resulting in clusters of collimated electrons, known as electron-jets. The search is performed with 2.04 fb(-1) of data collected in 2011 with the ATLAS detector at the Large Hadron Collider in proton-proton collisions at root s = 7 TeV. One event satisfying the signal selection criteria is observed, which is consistent with the expected background rate. Limits on the product of the WH production cross section and the branching ratio of a Higgs boson decaying to prompt electron-jets are calculated as a function of a Higgs boson mass in the range from 100 to 140 GeV.",
journal = "New Journal of Physics",
title = "Search for WH production with a light Higgs boson decaying to prompt electron-jets in proton-proton collisions at root s=7 TeV with the ATLAS detector",
volume = "15",
doi = "10.1088/1367-2630/15/4/043009"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Milutinović-Dumbelović, Gordana
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5460
AB  - The results of a search for an excited bottom-quark b* in pp collisions at root s = 7 TeV, using 4.7 fb(-1) of data collected by the ATLAS detector at the LHC are presented. In the model studied, a single b*-quark is produced through a chromomagnetic interaction and subsequently decays to a W boson and a top quark. The search is performed in the dilepton and lepton + jets final states, which are combined to set limits on b*-quark couplings for a range of b*-quark masses. For a benchmark with unit size chromomagnetic and Standard Model-like electroweak b* couplings, b* quarks with masses less than 870 GeV are excluded at the 95% credibility level. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Search for single b*-quark production with the ATLAS detector at root s=7 TeV
VL  - 721
IS  - 4-5
SP  - 171
EP  - 189
DO  - 10.1016/j.physletb.2013.03.016
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Milutinović-Dumbelović, Gordana and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5460",
abstract = "The results of a search for an excited bottom-quark b* in pp collisions at root s = 7 TeV, using 4.7 fb(-1) of data collected by the ATLAS detector at the LHC are presented. In the model studied, a single b*-quark is produced through a chromomagnetic interaction and subsequently decays to a W boson and a top quark. The search is performed in the dilepton and lepton + jets final states, which are combined to set limits on b*-quark couplings for a range of b*-quark masses. For a benchmark with unit size chromomagnetic and Standard Model-like electroweak b* couplings, b* quarks with masses less than 870 GeV are excluded at the 95% credibility level. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Search for single b*-quark production with the ATLAS detector at root s=7 TeV",
volume = "721",
number = "4-5",
pages = "171-189",
doi = "10.1016/j.physletb.2013.03.016"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Milutinović-Dumbelović, Gordana
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5579
AB  - This paper reports a measurement of the W+b-jets (W+b+X and W+b (b) over bar +X) production cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. These results are based on data corresponding to an integrated luminosity of 4.6 fb(-1), collected with the ATLAS detector. Cross-sections are presented as a function of jet multiplicity and of the transverse momentum of the leading b-jet for both the muon and electron decay modes of the W boson. The W+b-jets cross-section, corrected for all known detector effects, is quoted in a limited kinematic range. Combining the muon and electron channels, the fiducial cross-section for W+b-jets is measured to be 7.1 +/- 0.5 (stat) +/- 1.4 (syst) pb, consistent with the next-to-leading order QCD prediction, corrected for non-perturbative and double-parton interactions (DPI) contributions, of 4.70 +/- 0.09 (stat) (+0.60)(-0.49) (scale) +/- 0.06 (PDF) +/- 0.16 (non-pert) (+0.52)(-0.38) (DPI) pb.
T2  - Journal of High Energy Physics
T1  - Measurement of the cross-section for W boson production in association with b-jets in pp collisions at root s=7 TeV with the ATLAS detector
IS  - 6
DO  - 10.1007/JHEP06(2013)084
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Milutinović-Dumbelović, Gordana and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5579",
abstract = "This paper reports a measurement of the W+b-jets (W+b+X and W+b (b) over bar +X) production cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. These results are based on data corresponding to an integrated luminosity of 4.6 fb(-1), collected with the ATLAS detector. Cross-sections are presented as a function of jet multiplicity and of the transverse momentum of the leading b-jet for both the muon and electron decay modes of the W boson. The W+b-jets cross-section, corrected for all known detector effects, is quoted in a limited kinematic range. Combining the muon and electron channels, the fiducial cross-section for W+b-jets is measured to be 7.1 +/- 0.5 (stat) +/- 1.4 (syst) pb, consistent with the next-to-leading order QCD prediction, corrected for non-perturbative and double-parton interactions (DPI) contributions, of 4.70 +/- 0.09 (stat) (+0.60)(-0.49) (scale) +/- 0.06 (PDF) +/- 0.16 (non-pert) (+0.52)(-0.38) (DPI) pb.",
journal = "Journal of High Energy Physics",
title = "Measurement of the cross-section for W boson production in association with b-jets in pp collisions at root s=7 TeV with the ATLAS detector",
number = "6",
doi = "10.1007/JHEP06(2013)084"
}

TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5668
AB  - The ATLAS detector at the Large Hadron Collider is used to search for excited electrons and excited muons in the channel pp - GT ll* - GT ll gamma, assuming that excited leptons are produced via contact interactions. The analysis is based on 13 fb(-1) of pp collisions at a centre-of-mass energy of 8 TeV. No evidence for excited leptons is found, and a limit is set at the 95% credibility level on the cross section times branching ratio as a function of the excited-lepton mass m(l*). For m(l*) GT = 0.8 TeV, the respective upper limits on sigma B(l(*) - GT l gamma) are 0.75 and 0.90 fb for the e* and mu* searches. Limits on sigma B are converted into lower bounds on the compositeness scale 3. In the special case where Lambda = m(l*), excited-electron and excited-muon masses below 2.2 TeV are excluded.
T2  - New Journal of Physics
T1  - Search for excited electrons and muons in root s=8 TeV proton-proton collisions with the ATLAS detector
VL  - 15
DO  - 10.1088/1367-2630/15/9/093011
ER  - 

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5668",
abstract = "The ATLAS detector at the Large Hadron Collider is used to search for excited electrons and excited muons in the channel pp - GT ll* - GT ll gamma, assuming that excited leptons are produced via contact interactions. The analysis is based on 13 fb(-1) of pp collisions at a centre-of-mass energy of 8 TeV. No evidence for excited leptons is found, and a limit is set at the 95% credibility level on the cross section times branching ratio as a function of the excited-lepton mass m(l*). For m(l*) GT = 0.8 TeV, the respective upper limits on sigma B(l(*) - GT l gamma) are 0.75 and 0.90 fb for the e* and mu* searches. Limits on sigma B are converted into lower bounds on the compositeness scale 3. In the special case where Lambda = m(l*), excited-electron and excited-muon masses below 2.2 TeV are excluded.",
journal = "New Journal of Physics",
title = "Search for excited electrons and muons in root s=8 TeV proton-proton collisions with the ATLAS detector",
volume = "15",
doi = "10.1088/1367-2630/15/9/093011"
}

TY  - JOUR
AU  - Aad, G.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5673
AB  - This Letter reports a measurement of the high-mass Drell-Yan differential cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. Based on an integrated luminosity of 4.9 fb(-1), the differential cross-section in the Z/gamma* - GT e(+)e(-) channel is measured with the ATLAS detector as a function of the invariant mass, m(ee), in the range 116 LT m(ee) LT 1500 GeV, for a fiducial region in which both the electron and the positron have transverse momentum p(T) GT 25 GeV and pseudorapidity vertical bar n vertical bar LT 2.5. A comparison is made to various event generators and to the predictions of perturbative QCD calculations at next-to-next-to-leading order. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Measurement of the high-mass Drell-Yan differential cross-section in pp collisions at root s=7 TeV with the ATLAS detector
VL  - 725
IS  - 4-5
SP  - 223
EP  - 242
DO  - 10.1016/j.physletb.2013.07.049
ER  - 

@article{
author = "Aad, G. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5673",
abstract = "This Letter reports a measurement of the high-mass Drell-Yan differential cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. Based on an integrated luminosity of 4.9 fb(-1), the differential cross-section in the Z/gamma* - GT e(+)e(-) channel is measured with the ATLAS detector as a function of the invariant mass, m(ee), in the range 116 LT m(ee) LT 1500 GeV, for a fiducial region in which both the electron and the positron have transverse momentum p(T) GT 25 GeV and pseudorapidity vertical bar n vertical bar LT 2.5. A comparison is made to various event generators and to the predictions of perturbative QCD calculations at next-to-next-to-leading order. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Measurement of the high-mass Drell-Yan differential cross-section in pp collisions at root s=7 TeV with the ATLAS detector",
volume = "725",
number = "4-5",
pages = "223-242",
doi = "10.1016/j.physletb.2013.07.049"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5614
AB  - In order to study further the long-range correlations (ridge) observed recently in p + Pb collisions at root s(NN) = 5.02 TeV, the second-order azimuthal anisotropy parameter of charged particles, v(2), has been measured with the cumulant method using the ATLAS detector at the LHC. In a data sample corresponding to an integrated luminosity of approximately 1 mu b(-1), the parameter v(2) has been obtained using two- and four-particle cumulants over the pseudorapidity range vertical bar eta vertical bar LT 2.5. The results are presented as a function of transverse momentum and the event activity, defined in terms of the transverse energy summed over 3.1 LT eta LT 4.9 in the direction of the Pb beam. They show features characteristic of collective anisotropic flow, similar to that observed in Pb + Pb collisions. A comparison is made to results obtained using two-particle correlation methods, and to predictions from hydrodynamic models of p + Pb collisions. Despite the small transverse spatial extent of the p + Pb collision system, the large magnitude of v(2) and its similarity to hydrodynamic predictions provide additional evidence for the importance of final-state effects in p + Pb reactions. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Measurement with the ATLAS detector of multi-particle azimuthal correlations in p plus Pb collisions at root s(NN)=5.02 TeV
VL  - 725
IS  - 1-3
SP  - 60
EP  - 78
DO  - 10.1016/j.physletb.2013.06.057
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5614",
abstract = "In order to study further the long-range correlations (ridge) observed recently in p + Pb collisions at root s(NN) = 5.02 TeV, the second-order azimuthal anisotropy parameter of charged particles, v(2), has been measured with the cumulant method using the ATLAS detector at the LHC. In a data sample corresponding to an integrated luminosity of approximately 1 mu b(-1), the parameter v(2) has been obtained using two- and four-particle cumulants over the pseudorapidity range vertical bar eta vertical bar LT 2.5. The results are presented as a function of transverse momentum and the event activity, defined in terms of the transverse energy summed over 3.1 LT eta LT 4.9 in the direction of the Pb beam. They show features characteristic of collective anisotropic flow, similar to that observed in Pb + Pb collisions. A comparison is made to results obtained using two-particle correlation methods, and to predictions from hydrodynamic models of p + Pb collisions. Despite the small transverse spatial extent of the p + Pb collision system, the large magnitude of v(2) and its similarity to hydrodynamic predictions provide additional evidence for the importance of final-state effects in p + Pb reactions. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Measurement with the ATLAS detector of multi-particle azimuthal correlations in p plus Pb collisions at root s(NN)=5.02 TeV",
volume = "725",
number = "1-3",
pages = "60-78",
doi = "10.1016/j.physletb.2013.06.057"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5275
AB  - A search for squarks and gluinos in final states containing jets, missing transverse momentum and no high-p(T) electrons or muons is presented. The data represent the complete sample recorded in 2011 by the ATLAS experiment in 7 TeV proton-proton collisions at the Large Hadron Collider, with a total integrated luminosity of 4.7 fb(-1). No excess above the Standard Model background expectation is observed. Gluino masses below 860 GeV and squark masses below 1320 GeV are excluded at the 95% confidence level in simplified models containing only squarks of the first two generations, a gluino octet and a massless neutralino, for squark or gluino masses below 2 TeV, respectively. Squarks and gluinos with equal masses below 1410 GeV are excluded. In minimal supergravity/constrained minimal supersymmetric Standard Model models with tan beta = 10, A(0) = 0 and mu GT 0, squarks and gluinos of equal mass are excluded for masses below 1360 GeV. Constraints are also placed on the parameter space of supersymmetric models with compressed spectra. These limits considerably extend the region of supersymmetric parameter space excluded by previous measurements with the ATLAS detector.
T2  - Physical Review D
T1  - Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using 4:7 fb(-1) of root s=7 TeV proton-proton collision data
VL  - 87
IS  - 1
DO  - 10.1103/PhysRevD.87.012008
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5275",
abstract = "A search for squarks and gluinos in final states containing jets, missing transverse momentum and no high-p(T) electrons or muons is presented. The data represent the complete sample recorded in 2011 by the ATLAS experiment in 7 TeV proton-proton collisions at the Large Hadron Collider, with a total integrated luminosity of 4.7 fb(-1). No excess above the Standard Model background expectation is observed. Gluino masses below 860 GeV and squark masses below 1320 GeV are excluded at the 95% confidence level in simplified models containing only squarks of the first two generations, a gluino octet and a massless neutralino, for squark or gluino masses below 2 TeV, respectively. Squarks and gluinos with equal masses below 1410 GeV are excluded. In minimal supergravity/constrained minimal supersymmetric Standard Model models with tan beta = 10, A(0) = 0 and mu GT 0, squarks and gluinos of equal mass are excluded for masses below 1360 GeV. Constraints are also placed on the parameter space of supersymmetric models with compressed spectra. These limits considerably extend the region of supersymmetric parameter space excluded by previous measurements with the ATLAS detector.",
journal = "Physical Review D",
title = "Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using 4:7 fb(-1) of root s=7 TeV proton-proton collision data",
volume = "87",
number = "1",
doi = "10.1103/PhysRevD.87.012008"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj.
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5552
AB  - A search for resonant diboson production using a data sample corresponding to 4.7 fb(-1) of integrated luminosity collected by the ATLAS experiment at the Large Hadron Collider in pp collisions at root s = 7 TeV is presented. The search for a narrow resonance in the WW or WZ mass distribution is conducted in a final state with an electron or a muon, missing transverse momentum, and at least two jets. No significant excess is observed and limits are set using three benchmark models: WW resonance masses below 940 and 710 GeV are excluded at 95% confidence level for spin-2 Randall-Sundrum and bulk Randall-Sundrum gravitons, respectively; WZ resonance masses below 950 GeV are excluded at 95% confidence level for a spin-1 extended gauge model W boson.
T2  - Physical Review D
T1  - Search for resonant diboson production in the WW/WZ - GT lvjj decay channels with the ATLAS detector at root s=7 TeV
VL  - 87
IS  - 11
DO  - 10.1103/PhysRevD.87.112006
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj. and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5552",
abstract = "A search for resonant diboson production using a data sample corresponding to 4.7 fb(-1) of integrated luminosity collected by the ATLAS experiment at the Large Hadron Collider in pp collisions at root s = 7 TeV is presented. The search for a narrow resonance in the WW or WZ mass distribution is conducted in a final state with an electron or a muon, missing transverse momentum, and at least two jets. No significant excess is observed and limits are set using three benchmark models: WW resonance masses below 940 and 710 GeV are excluded at 95% confidence level for spin-2 Randall-Sundrum and bulk Randall-Sundrum gravitons, respectively; WZ resonance masses below 950 GeV are excluded at 95% confidence level for a spin-1 extended gauge model W boson.",
journal = "Physical Review D",
title = "Search for resonant diboson production in the WW/WZ - GT lvjj decay channels with the ATLAS detector at root s=7 TeV",
volume = "87",
number = "11",
doi = "10.1103/PhysRevD.87.112006"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5397
AB  - The large difference between the Planck scale and the electroweak scale, known as the hierarchy problem, is addressed in certain models through the postulate of extra spatial dimensions. A search for evidence of extra spatial dimensions in the diphoton channel has been performed using the full set of proton-proton collisions at root s = 7 TeV recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. This dataset corresponds to an integrated luminosity of 4.9 fb(-1). The diphoton invariant mass spectrum is observed to be in good agreement with the Standard Model expectation. In the context of the model proposed by Arkani-Hamed, Dimopoulos and Dvali, 95% confidence level lower limits of between 2.52 and 3.92 TeV are set on the ultraviolet cutoff scale MS depending on the number of extra dimensions and the theoretical formalism used. In the context of the Randall-Sundrum model, a lower limit of 2.06 (1.00) TeV at 95% confidence level is set on the mass of the lightest graviton for couplings of k/(M) over bar (Pl) = 0.1(0.01). Combining with the ATLAS dilepton searches based on the 2011 data, the 95% confidence level lower limit on the Randall-Sundrum graviton mass is further tightened to 2.23 (1.03) TeV for k/(M) over bar (Pl) = 0.1(0.01).
T2  - New Journal of Physics
T1  - Search for extra dimensions in diphoton events from proton-proton collisions at root s=7 TeV in the ATLAS detector at the LHC
VL  - 15
DO  - 10.1088/1367-2630/15/4/043007
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5397",
abstract = "The large difference between the Planck scale and the electroweak scale, known as the hierarchy problem, is addressed in certain models through the postulate of extra spatial dimensions. A search for evidence of extra spatial dimensions in the diphoton channel has been performed using the full set of proton-proton collisions at root s = 7 TeV recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. This dataset corresponds to an integrated luminosity of 4.9 fb(-1). The diphoton invariant mass spectrum is observed to be in good agreement with the Standard Model expectation. In the context of the model proposed by Arkani-Hamed, Dimopoulos and Dvali, 95% confidence level lower limits of between 2.52 and 3.92 TeV are set on the ultraviolet cutoff scale MS depending on the number of extra dimensions and the theoretical formalism used. In the context of the Randall-Sundrum model, a lower limit of 2.06 (1.00) TeV at 95% confidence level is set on the mass of the lightest graviton for couplings of k/(M) over bar (Pl) = 0.1(0.01). Combining with the ATLAS dilepton searches based on the 2011 data, the 95% confidence level lower limit on the Randall-Sundrum graviton mass is further tightened to 2.23 (1.03) TeV for k/(M) over bar (Pl) = 0.1(0.01).",
journal = "New Journal of Physics",
title = "Search for extra dimensions in diphoton events from proton-proton collisions at root s=7 TeV in the ATLAS detector at the LHC",
volume = "15",
doi = "10.1088/1367-2630/15/4/043007"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj.
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5401
AB  - A search for long-lived particles is performed using a data sample of 4.7 fb(-1) from proton-proton collisions at a centre-of-mass energy. root s = 7 TeV collected by the ATLAS detector at the LHC. No excess is observed above the estimated background and lower limits, at 95% confidence level, are set on the mass of the long-lived particles in different scenarios, based on their possible interactions in the inner detector, the calorimeters and the muon spectrometer. Long-lived staus in gauge-mediated SUSY-breaking models are excluded up to a mass of 300 GeV for tan beta = 5-20. Directly produced long-lived sleptons are excluded up to a mass of 278 GeV. R-hadrons, composites of gluino (stop, sbottom) and light quarks, are excluded up to a mass of 985 GeV (683 GeV, 612 GeV) when using a generic interaction model. Additionally two sets of limits on R-hadrons are obtained that are less sensitive to the interaction model for R-hadrons. One set of limits is obtained using only the inner detector and calorimeter observables, and a second set of limits is obtained based on the inner detector alone. (c) 2013 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Searches for heavy long-lived sleptons and R-hadrons with the ATLAS detector in pp collisions at root s=7 TeV
VL  - 720
IS  - 4-5
SP  - 277
EP  - 308
DO  - 10.1016/j.physletb.2013.02.015
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj. and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5401",
abstract = "A search for long-lived particles is performed using a data sample of 4.7 fb(-1) from proton-proton collisions at a centre-of-mass energy. root s = 7 TeV collected by the ATLAS detector at the LHC. No excess is observed above the estimated background and lower limits, at 95% confidence level, are set on the mass of the long-lived particles in different scenarios, based on their possible interactions in the inner detector, the calorimeters and the muon spectrometer. Long-lived staus in gauge-mediated SUSY-breaking models are excluded up to a mass of 300 GeV for tan beta = 5-20. Directly produced long-lived sleptons are excluded up to a mass of 278 GeV. R-hadrons, composites of gluino (stop, sbottom) and light quarks, are excluded up to a mass of 985 GeV (683 GeV, 612 GeV) when using a generic interaction model. Additionally two sets of limits on R-hadrons are obtained that are less sensitive to the interaction model for R-hadrons. One set of limits is obtained using only the inner detector and calorimeter observables, and a second set of limits is obtained based on the inner detector alone. (c) 2013 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Searches for heavy long-lived sleptons and R-hadrons with the ATLAS detector in pp collisions at root s=7 TeV",
volume = "720",
number = "4-5",
pages = "277-308",
doi = "10.1016/j.physletb.2013.02.015"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5301
AB  - A search is presented for production of a heavy up-type quark (t) together with its antiparticle, assuming a significant branching ratio for subsequent decay into a W boson and a b quark. The search is based on 4.7 fb(-1) of pp collisions root s = 7 TeV recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Data are analyzed in the lepton + jets final state, characterized by a high-transverse-momentum isolated electron or muon, large missing transverse momentum and at least three jets. The analysis strategy relies on the substantial boost of the W bosons in the t(t) over bar signal when m(t) greater than or similar to 400 GeV. No significant excess of events above the Standard Model expectation is observed and the result of the search is interpreted in the context of fourth-generation and vector-like quark models. Under the assumption of a branching ratio BR(t - GT W b) = I, a fourth-generation t quark with mass lower than 656 GeV is excluded at 95% confidence level. In addition, in light of the recent discovery of a new boson of mass similar to 126 GeV at the LHC, upper limits are derived in the two-dimensional plane of BR(t - GT Wb) versus BR(t - GT Ht), where H is the Standard Model Higgs boson, for vector-like quarks of various masses. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Search for pair production of heavy top-like quarks decaying to a high-p(T) W boson and a b quark in the lepton plus jets final state at root s=7 TeV with the ATLAS detector
VL  - 718
IS  - 4-5
SP  - 1284
EP  - 1302
DO  - 10.1016/j.physletb.2012.11.071
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5301",
abstract = "A search is presented for production of a heavy up-type quark (t) together with its antiparticle, assuming a significant branching ratio for subsequent decay into a W boson and a b quark. The search is based on 4.7 fb(-1) of pp collisions root s = 7 TeV recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Data are analyzed in the lepton + jets final state, characterized by a high-transverse-momentum isolated electron or muon, large missing transverse momentum and at least three jets. The analysis strategy relies on the substantial boost of the W bosons in the t(t) over bar signal when m(t) greater than or similar to 400 GeV. No significant excess of events above the Standard Model expectation is observed and the result of the search is interpreted in the context of fourth-generation and vector-like quark models. Under the assumption of a branching ratio BR(t - GT W b) = I, a fourth-generation t quark with mass lower than 656 GeV is excluded at 95% confidence level. In addition, in light of the recent discovery of a new boson of mass similar to 126 GeV at the LHC, upper limits are derived in the two-dimensional plane of BR(t - GT Wb) versus BR(t - GT Ht), where H is the Standard Model Higgs boson, for vector-like quarks of various masses. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Search for pair production of heavy top-like quarks decaying to a high-p(T) W boson and a b quark in the lepton plus jets final state at root s=7 TeV with the ATLAS detector",
volume = "718",
number = "4-5",
pages = "1284-1302",
doi = "10.1016/j.physletb.2012.11.071"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5372
AB  - A measurement of angular correlations in Drell-Yan lepton pairs via the phi(eta)* observable is presented. This variable probes the same physics as the Z/gamma* boson transverse momentum with a better experimental resolution. The Z/gamma* - GT e(+)e(-) and Z/gamma* - GT mu(+)mu(-) decays produced in proton-proton collisions at a centre-of-mass energy of root s = 7 TeV are used. The data were collected with the ATLAS detector at the LHC and correspond to an integrated luminosity of 4.6 fb(-1). Normalised differential cross sections as a function of phi(eta)* are measured separately for electron and muon decay channels. These channels are then combined for improved accuracy. The cross section is also measured double differentially as a function of phi(eta)* for three independent bins of the Z boson rapidity. The results are compared to QCD calculations and to predictions from different Monte Carlo event generators. The data are reasonably well described, in all measured Z boson rapidity regions, by resummed QCD predictions combined with fixed-order perturbative QCD calculations or by some Monte Carlo event generators. The measurement precision is typically better by one order of magnitude than present theoretical uncertainties. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector
VL  - 720
IS  - 1-3
SP  - 32
EP  - 51
DO  - 10.1016/j.physletb.2013.01.054
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5372",
abstract = "A measurement of angular correlations in Drell-Yan lepton pairs via the phi(eta)* observable is presented. This variable probes the same physics as the Z/gamma* boson transverse momentum with a better experimental resolution. The Z/gamma* - GT e(+)e(-) and Z/gamma* - GT mu(+)mu(-) decays produced in proton-proton collisions at a centre-of-mass energy of root s = 7 TeV are used. The data were collected with the ATLAS detector at the LHC and correspond to an integrated luminosity of 4.6 fb(-1). Normalised differential cross sections as a function of phi(eta)* are measured separately for electron and muon decay channels. These channels are then combined for improved accuracy. The cross section is also measured double differentially as a function of phi(eta)* for three independent bins of the Z boson rapidity. The results are compared to QCD calculations and to predictions from different Monte Carlo event generators. The data are reasonably well described, in all measured Z boson rapidity regions, by resummed QCD predictions combined with fixed-order perturbative QCD calculations or by some Monte Carlo event generators. The measurement precision is typically better by one order of magnitude than present theoretical uncertainties. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector",
volume = "720",
number = "1-3",
pages = "32-51",
doi = "10.1016/j.physletb.2013.01.054"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj.
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5293
AB  - A search for the electroweak pair production of charged sleptons and weak gauginos decaying into final states with two leptons is performed using 4.7 fb(-1) of proton-proton collision data at root s = 7 TeV recorded with the ATLAS experiment at the Large Hadron Collider. No significant excesses are observed with respect to the prediction from Standard Model processes. In the scenario of direct slepton production, if the sleptons decay directly into the lightest neutralino, left-handed slepton masses between 85 and 195 GeV are excluded at 95% confidence level for a 20 GeV neutralino. Chargino masses between 110 and 340 GeV are excluded in the scenario of direct production of wino-like chargino pairs decaying into the lightest neutralino via an intermediate on-shell charged slepton for a 10 GeV neutralino. The results are also interpreted in the framework of the phenomenological minimal supersymmetric Standard Model. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Search for direct slepton and gaugino production in final states with two leptons and missing transverse momentum with the ATLAS detector in pp collisions at root s=7 TeV
VL  - 718
IS  - 3
SP  - 879
EP  - 901
DO  - 10.1016/j.physletb.2012.11.058
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj. and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5293",
abstract = "A search for the electroweak pair production of charged sleptons and weak gauginos decaying into final states with two leptons is performed using 4.7 fb(-1) of proton-proton collision data at root s = 7 TeV recorded with the ATLAS experiment at the Large Hadron Collider. No significant excesses are observed with respect to the prediction from Standard Model processes. In the scenario of direct slepton production, if the sleptons decay directly into the lightest neutralino, left-handed slepton masses between 85 and 195 GeV are excluded at 95% confidence level for a 20 GeV neutralino. Chargino masses between 110 and 340 GeV are excluded in the scenario of direct production of wino-like chargino pairs decaying into the lightest neutralino via an intermediate on-shell charged slepton for a 10 GeV neutralino. The results are also interpreted in the framework of the phenomenological minimal supersymmetric Standard Model. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Search for direct slepton and gaugino production in final states with two leptons and missing transverse momentum with the ATLAS detector in pp collisions at root s=7 TeV",
volume = "718",
number = "3",
pages = "879-901",
doi = "10.1016/j.physletb.2012.11.058"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5291
AB  - A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb(-1) of root s = 7 TeV proton-proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
T2  - Physics Letters B
T1  - Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in root s=7 TeV pp collisions with the ATLAS detector
VL  - 718
IS  - 3
SP  - 841
EP  - 859
DO  - 10.1016/j.physletb.2012.11.039
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5291",
abstract = "A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb(-1) of root s = 7 TeV proton-proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.",
journal = "Physics Letters B",
title = "Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in root s=7 TeV pp collisions with the ATLAS detector",
volume = "718",
number = "3",
pages = "841-859",
doi = "10.1016/j.physletb.2012.11.039"
}

TY  - JOUR
AU  - Aad, G.
AU  - Borjanovic, I.
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Agatonović-Jovin, Tatjana
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Popovic, D. S.
AU  - Sijacki, Dj
AU  - Simic, Lj
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
AU  - Zivkovic, L.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5367
AB  - A search for neutral Higgs bosons of the Minimal Supersymmetric Standard Model (MSSM) is reported. The analysis is based on a sample of proton-proton collisions at a centre-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider. The data were recorded in 2011 and correspond to an integrated luminosity of 4.7 fb(-1) to 4.8 fb(-1). Higgs boson decays into oppositely-charged in muon or tau lepton pairs are considered for final states requiring either the presence or absence of b-jets. No statistically significant excess over the expected background is observed and exclusion limits at the 95% confidence level are derived. The exclusion limits are for the production cross-section of a generic neutral Higgs boson, phi, as a function of the Higgs boson mass and for h/A/H production in the MSSM as a function of the parameters m(A) and tan beta in the m(h)(max) scenario for m(A) in the range of 90 GeV to 500 GeV.
T2  - Journal of High Energy Physics
T1  - Search for the neutral Higgs bosons of the minimal supersymmetric standard model in pp collisions at root s=7 TeV with the ATLAS detector
IS  - 2
DO  - 10.1007/JHEP02(2013)095
ER  - 

@article{
author = "Aad, G. and Borjanovic, I. and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popovic, D. S. and Sijacki, Dj and Simic, Lj and Vranjes, N. and Vranješ Milosavljević, Marija and Zivkovic, L.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5367",
abstract = "A search for neutral Higgs bosons of the Minimal Supersymmetric Standard Model (MSSM) is reported. The analysis is based on a sample of proton-proton collisions at a centre-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider. The data were recorded in 2011 and correspond to an integrated luminosity of 4.7 fb(-1) to 4.8 fb(-1). Higgs boson decays into oppositely-charged in muon or tau lepton pairs are considered for final states requiring either the presence or absence of b-jets. No statistically significant excess over the expected background is observed and exclusion limits at the 95% confidence level are derived. The exclusion limits are for the production cross-section of a generic neutral Higgs boson, phi, as a function of the Higgs boson mass and for h/A/H production in the MSSM as a function of the parameters m(A) and tan beta in the m(h)(max) scenario for m(A) in the range of 90 GeV to 500 GeV.",
journal = "Journal of High Energy Physics",
title = "Search for the neutral Higgs bosons of the minimal supersymmetric standard model in pp collisions at root s=7 TeV with the ATLAS detector",
number = "2",
doi = "10.1007/JHEP02(2013)095"
}