Browsing by Author "Chatrchyan, S."
Now showing items 1-20 of 203
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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 ... -
CMS Collaboration
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2014-12) -
Combined search for the quarks of a sequential fourth generation
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2012-12-01)Results are presented from a search for a fourth generation of quarks produced singly or in pairs in a data set corresponding to an integrated luminosity of 5 fb(-1) recorded by the CMS experiment at the LHC in 2011. A ... -
Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2014-07-09)Constraints are presented on the total width of the recently discovered Higgs boson, Gamma(H), using its relative on-shell and off-shell production and decay rates to a pair of Z bosons, where one Z boson decays to an ... -
Description and performance of track and primary-vertex reconstruction with the CMS tracker
Chatrchyan, S.; Işıldak, Bora (IOP Publishing, 2014-10)A description is provided of the software algorithms developed for the CMS tracker both for reconstructing charged-particle trajectories in proton-proton interactions and for using the resulting tracks to estimate the ... -
Determination of the top-quark pole mass and strong coupling constant from the tt production cross section in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2014-01-20)The inclusive cross section for top-quark pair production measured by the CMS experiment in proton–proton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order ... -
Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at √s = 7 TeV
Chatrchyan, S.; Işıldak, Bora (2013-09)The energy calibration and resolution of the electromagnetic calorimeter (ECAL) of the CMS detector have been determined using proton-proton collision data from LHC operation in 2010 and 2011 at a centre-of-mass energy of ... -
Erratum to: Measurement of jet multiplicity distributions in tt¯ production in pp collisions at s√=7TeV
Chatrchyan, S.; Işıldak, Bora (Springer International Publishing, 2015-05) -
Erratum to: Search for new physics in events with same-sign dileptons and jets in pp collisions at (Formula presented.) = 8 TeV
Chatrchyan, S.; Işıldak, Bora (Springer International Publishing, 2015-01)We update the parameters of the fitted functions for lepton and jet selection efficiencies presented in section 9 of the original paper. Due to an editorial error, these numbers were wrongly inserted. The corresponding ... -
Erratum: search for new physics in events with same-sign dileptons and b jets in pp collisions at root s = 8 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-07) -
Event activity dependence of (nS) production in=5.02 TeV pPb and=2.76 TeV pp collisions
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2014-04)The production of (1S), (2S), and (3S) is investigated in pPb and pp collisions at centre-of-mass energies per nucleon pair of 5.02 TeV and 2.76 TeV, respectively. The datasets correspond to integrated luminosities of about ... -
Event shapes and azimuthal correlations in Z plus jets events in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2013-05-23)Measurements of event shapes and azimuthal correlations are presented for events where a Z boson is produced in association with jets in proton-proton collisions. The data collected with the CMS detector at the CERN LHC ... -
Evidence for associated production of a single top quark and W boson in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-01-11)Evidence is presented for the associated production of a single top quark and W boson in pp collisions at root s = 7 TeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 4.9 ... -
Evidence for the 125 GeV Higgs boson decaying to a pair of tau leptons
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2014-05)A search for a standard model Higgs boson decaying into a pair of tau leptons is performed using events recorded by the CMS experiment at the LHC in 2011 and 2012. The dataset corresponds to an integrated luminosity of 4.9 ... -
Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2013-01-08)A measurement of the forward-backward asymmetry (A(FB)) of Drell-Yan lepton pairs in pp collisions at root s = 7 TeV is presented. The data sample, collected with the CMS detector, corresponds to an integrated luminosity ... -
Identification of b-quark jets with the CMS experiment
Chatrchyan, S.; Işıldak, Bora (IOP Publishing, 2013-04)At the Large Hadron Collider, the identification of jets originating from b quarks is important for searches for new physics and for measurements of standard model processes. A variety of algorithms has been developed by ... -
Inclusive and differential measurements of the t(t)over-bar charge asymmetry in proton-proton collisions root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2012-10-22)The t (t) over bar charge asymmetry is measured in events containing a charged lepton (electron or muon) and at least four jets, one of which is identified as originating from b-quark hadronization. The analyzed dataset ... -
Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at root s=8 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2014-02-05)A search is performed for a massive new vector-like quark T, with charge View the MathML source, that is pair produced together with its antiparticle in proton–proton collisions. The data were collected by the CMS experiment ...
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