Browsing by Author "(ORCID 0000-0002-0283-5234 & YÖK ID 124605) Işıldak, Bora"
Now showing items 901-920 of 930
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Study of exclusive two-photon production of W+W- in pp collisions at root s=7 TeV and constraints on anomalous quartic gauge couplings
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-07)A search for exclusive or quasi-exclusive W+W- production by photon-photon interactions, pp -> p(*)W(+)W(-)p(*), at \/s = 7 TeV is reported using data collected by the CMS detector with an integrated luminosity of 5.05 ... -
Study of final-state radiation in decays of Z bosons produced in pp collisions at 7 TeV
Khachatryan, V.; Işıldak, Bora (2015-05-01)The differential cross sections for the production of photons in Z→μ+μ−γ decays are presented as a function of the transverse energy of the photon and its separation from the nearest muon. The data for these measurements ... -
Study of hadronic event-shape variables in multijet final states in pp collisions at √s = 7TeV
Khachatryan, V.; Işıldak, Bora (Springer International Publishing, 2014-10)Event-shape variables, which are sensitive to perturbative and nonperturbative aspects of quantum chromodynamic (QCD) interactions, are studied in multijet events recorded in proton-proton collisions at s√=7s=7 TeV. ... -
Study of J/ψ meson production inside jets in pp collisions at √s=8 TeV
Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2020-05-10)A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at s=8TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb−1 collected with the ... -
Study of jet quenching with Z + jet correlations in Pb-Pb and pp collisions at √sNN=5.02TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2017-08-23)The production of jets in association with Z bosons, reconstructed via the mu(+)mu(-) and e(+)e(-) decay channels, is studied in pp and, for the first time, in Pb-Pb collisions. Both data samples were collected by the CMS ... -
Study of quark and gluon jet substructure in Z+jet and dijet events from pp collisions
Tumasyan, A.; Işıldak, Bora (Springer, 2022-01-31)Measurements of jet substructure describing the composition of quark- and gluon-initiated jets are presented. Proton-proton (pp) collision data at s = 13 TeV collected with the CMS detector are used, corresponding to an ... -
Study of the B +→ J / ψ Λ ¯ p decay in proton-proton collisions at √s = 8 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer, 2019-12-12)A study of the B +→ J / ψ Λ ¯ p decay using proton-proton collision data collected at s = 8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6 fb−1, is presented. The ratio of branching ... -
Study of the dijet mass spectrum in pp -> W + jets events at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2012-12-21)We report an investigation of the invariant mass spectrum of the two jets with highest transverse momentum in pp -> W + 2-jet and W + 3-jet events to look for resonant enhancement. The data sample corresponds to an integrated ... -
Study of the inclusive production of charged pions, kaons, and protons in pp collisions at root s=0.9, 2.76, and 7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2012-10)Spectra of identified charged hadrons are measured in pp collisions at the LHC for root s = 0.9, 2.76, and 7 TeV. Charged pions, kaons, and protons in the transverse-momentum range p(T) approximate to 0.1-1.7 GeV/c and for ... -
Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013)A study is presented of the mass and spin-parity of the new boson recently observed at the LHC at a mass near 125 GeV. An integrated luminosity of 17: 3 fb(-1), collected by the CMS experiment in proton-proton collisions ... -
Study of the production of charged pions, kaons, and protons in pPb collisions at root SNN=5.02 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2014-06)Spectra of identified charged hadrons are measured in pPb collisions with the CMS detector at the LHC at . Charged pions, kaons, and protons in the transverse-momentum range -1.7 and laboratory rapidity are identified via ... -
Study of the underlying event at forward rapidity in pp collisions at root s=0.9, 2.76, and 7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-04)The underlying event activity in proton-proton collisions at forward pseudorapidity (-6.6 < eta < -5.2) is studied with the CMS detector at the LHC, using a novel observable: the ratio of the forward energy density, ... -
Study of the underlying event in top quark pair production in pp collisions at 13 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2019-02-07)Measurements of normalized differential cross sections as functions of the multiplicity and kinematic variables of charged-particle tracks from the underlying event in top quark and antiquark pair production are presented. ... -
Study of vector boson scattering and search for new physics in events with two same-sign leptons and two jets
Khachatryan, V.; Işıldak, Bora (American Physical Society, 2015-02-06)A study of vector boson scattering in pp collisions at a center-of-mass energy of 8 TeV is presented. The data sample corresponds to an integrated luminosity of 19.4 fb−1 collected with the CMS detector. Candidate events ... -
Study of W boson production in PbPb and pp collisions at root s(NN)=2.76 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2012)A measurement is presented of W-boson production in PbPb collisions carried out at a nucleon-nucleon (NN) centre-of-mass energy root S-NN of 2.76 TeV at the LHC using the CMS detector. In data corresponding to an integrated ... -
Study of W boson production in pPb collisions at √sNN = 5.02 TeV
Khachatryan, V.; Işıldak, Bora (Elsevier, 2015-11-12)The first study of W boson production in pPb collisions is presented, for bosons decaying to a muon or electron, and a neutrino. The measurements are based on a data sample corresponding to an integrated luminosity of 34.6 ... -
Study of Z boson plus jets events using variables sensitive to double-parton scattering in pp collisions at 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2021-10-21)Double-parton scattering is investigated using events with a Z boson and jets. The Z boson is reconstructed using only the dimuon channel. The measurements are performed with proton-proton collision data recorded by the ... -
Study of Z boson production in pPb collisions at √sNN=5.02 TeV
Khachatryan, V.; Işıldak, Bora (Elsevier, 2016-08-10)The production of Z bosons in pPb collisions at View the MathML source is studied by the CMS experiment via the electron and muon decay channels. The inclusive cross section is compared to pp collision predictions, and ... -
Study of Z production in PbPb and pp collisions at (Formula presented.) TeV in the dimuon and dielectron decay channels
Chatrchyan, S.; Işıldak, Bora (Springer International Publishing, 2015-03)The production of Z bosons is studied in the dimuon and dielectron decay channels in PbPb and pp collisions at sNN−−−−√=2.76sNN=2.76 TeV, using data collected by the CMS experiment at the LHC. The PbPb data sample ... -
Suppression and azimuthal anisotropy of prompt and nonprompt J/psi production in PbPb collisions at root S-NN=2.76 TeV
Khachatryan, V.; Işıldak, Bora (Springer International Publishing, 2017-04)The nuclear modification factor R-AA and the azimuthal anisotropy coefficient v(2) ofprompt and nonprompt (i.e. those from decays of b hadrons) J/psi mesons, measured from PbPb and pp collisions at root S-NN = 2.76 rfeV ...
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