Browsing by Author "Işıldak, Bora"
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Alignment of the CMS tracker with LHC and cosmic ray data
Chatrchyan, S.; Işıldak, Bora (IOP Publishing, 2014-06)Results are reported from a search for supersymmetry in pp collisions at a center-of-mass energy of 8 TeV, based on events with a single isolated lepton (electron or muon) and multiple jets, at least two of which are ... -
Angular analysis and branching fraction measurement of the decay B-0 -> K*(0)mu(+)mu(-)
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2013-11-25)The angular distributions and the differential branching fraction of the decay B0→K⁎(892)0μ+μ− are studied using a data sample corresponding to an integrated luminosity of 5.2 fb−1 collected with the CMS detector at the ... -
Angular analysis of the decay B + → K + μ + μ − in proton-proton collisions at √s =8 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2018-12-01)The angular distribution of the flavor-changing neutral current decay B+→K+μ+μ- is studied in proton-proton collisions at a center-of-mass energy of 8 TeV. The analysis is based on data collected with the CMS detector at ... -
Angular analysis of the decay B0→K*0μ+μ- from pp collisions at s=8 TeV
Khachatryan, V.; Işıldak, Bora (Elsevier, 2016-02-10)The angular distributions and the differential branching fraction of the decay B0→K⁎(892)0μ+μ− are studied using data corresponding to an integrated luminosity of 20.5 fb−1 collected with the CMS detector at the LHC in pp ... -
Angular coefficients of Z bosons produced in pp collisions at s=8 TeV and decaying to μ+μ- as a function of transverse momentum and rapidity
Khachatryan, V.; Işıldak, Bora (Elsevier, 2015-11-12)Measurements of the five most significant angular coefficients, A0 through A4, for Z bosons produced in pp collisions at View the MathML source and decaying to μ+μ− are presented as a function of the transverse momentum ... -
Azimuthal anisotropy of charged particles with transverse momentum up to 100 GeV/c in PbPb collisions at √sNN= 5.02 TeV
Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2018-01)The Fourier coefficients v(2) and v(3) characterizing the anisotropy of the azimuthal distribution of charged particles produced in PbPb collisions at root S-NN = 5.02 TeV are measured with data collected by the CMS ... -
Azimuthal decorrelation of jets widely separated in rapidity in pp collisions at s√=7s=7 TeV
Khachatryan, V.; Işıldak, Bora (Springer International Publishing, 2018)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 s√=7s=7 TeV. The ... -
Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in pp collisions at s√=13TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2019-09)A measurement for inclusive 2- and 3-jet events of the azimuthal correlation between the two jets with the largest transverse momenta, Delta phi(12), is presented. The measurement considers events where the two leading ... -
Beyond nPDFs effects: prompt J/ψ and ψ(2S) production in pPb and pp collisions
Oh, G.; Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2019-02)A multi-dimensional analysis of prompt charmonia in pp and pPb collisions at root s(NN) = 5.02 TeV with the CMS detector is presented. The pPb differential cross-sections of prompt J/psi are shown in a wide kinematic region, ... -
Bose-Einstein correlations of charged hadrons in proton-proton collisions at s√ = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2020-03-03)Bose-Einstein correlations of charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons in proton-proton collisions at <mml:msqrt>s</mml:msqrt> = 13 ... -
Calibration of the CMS hadron calorimeters using proton-proton collision data at √s = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (IOP Publishing, 2020-05)Methods are presented for calibrating the hadron calorimeter system of theCMSetector at the LHC. The hadron calorimeters of the CMS experiment are sampling calorimeters of brass and scintillator, and are in the form of one ... -
Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions at √sNN = 5.02 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2019-08-01)The almost hermetic coverage of the CMS detector is used to measure the distribution of transverse energy, E-T, over 13.2 units of pseudorapidity, eta, for pPb collisions at a center-of-mass energy per nucleon pair of root ... -
Charged-particle angular correlations in XeXe collisions at √sNN = 5.44 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2019-10-03)Azimuthal correlations of charged particles in xenon-xenon collisions at a center-of-mass energy per nucleon pair of root s(NN) = 5.44 TeV are studied. The data were collected by the CMS experiment at the LHC with a total ... -
Charged-particle nuclear modification factors in PbPb and pPb collisions at root s(NN)=5.02 TeV
Khachatryan, V.; Işıldak, Bora (Springer International Publishing, 2017)The spectra of charged particles produced within the pseudorapidity window |η| < 1 at sNN−−−−√=5.02sNN=5.02 TeV are measured using 404 μb−1 of PbPb and 27.4 pb−1 of pp data collected by the CMS detector at the LHC in ... -
Charged-particle nuclear modification factors in XeXe collisions at √sNN=5.44 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2018-10)The differential yields of charged particles having pseudorapidity within vertical bar eta vertical bar < 1 are measured using xenon-xenon (XeXe) collisions at root S-NN = 5.44 TeV. The data, corresponding to an integrated ... -
CMS Collaboration
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2014-12) -
CMS Collaboration
Khachatryan, V.; Işıldak, Bora (Elsevier, 2014-11) -
CMS Collaboration
Aarrestad, T. K.; Işıldak, Bora (Elsevier, 2016) -
The CMS trigger system
Khachatryan, V.; Işıldak, Bora (IOP , 2017)This paper describes the CMS trigger system and its performance during Run 1 of the LHC. The trigger system consists of two levels designed to select events of potential physics interest from a GHz (MHz) interaction rate ... -
Coherent J/ψ photoproduction in ultra-peripheral PbPb collisions at √sNN = 2.76 TeV with the CMS experiment
Khachatryan, V.; Işıldak, Bora (Elsevier, 2017-09-10)The cross section for coherent J/psi photoproduction accompanied by at least one neutron on one side of the interaction point and no neutron activity on the other side, Xn0n, is measured with the CMS experiment in ...
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