Browsing Faculty of Engineering by Author "Chatrchyan, S."
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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 ... -
Inclusive search for supersymmetry using razor variables in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-08-23)An inclusive search is presented for new heavy particle pairs produced in root s = 7 TeV proton-proton collisions at the LHC using 4.7 +/- 0.1 fb(-1) of integrated luminosity. The selected events are analyzed in the 2D ... -
Interpretation of searches for supersymmetry with simplified models
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-09-23)The results of searches for supersymmetry by the CMS experiment are interpreted in the framework of simplified models. The results are based on data corresponding to an integrated luminosity of 4.73 to 4.98 fb(-1). The ... -
Jet and underlying event properties as a function of charged-particle multiplicity in proton–proton collisions at TeX
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-12)Characteristics of multi-particle production in proton-proton collisions at root s = 7 TeV are studied as a function of the charged-particle multiplicity, N (ch). The produced particles are separated into two classes: those ... -
Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-04-26)The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at root s = 7 TeV is presented. The results are based on a data set corresponding to an integrated ... -
Measurement of associated W plus charm production in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2014-02)Measurements are presented of the associated production of a W boson and a charm-quark jet (W + c) in pp collisions at a center-of-mass energy of 7 TeV. The analysis is conducted with a data sample corresponding to a total ... -
Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at root s=7TeV
Chatrchyan, S.; Işıldak, Bora (2014-11)A measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at s√=7TeVs=7TeV is presented. The data sample corresponds to an integrated luminosity of 5.0 ... -
Measurement of differential top-quark-pair production cross sections in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-03)Normalised differential top-quark-pair production cross sections are measured in pp collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector using data recorded in 2011 corresponding to an integrated ... -
Measurement of four-jet production in proton-proton collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2014-05-01)Measurements of the differential cross sections for the production of exactly four jets in proton-proton collisions are presented as a function of the transverse momentum p(T) and pseudorapidity eta, together with the ... -
Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2014-01)A search for the standard model Higgs boson decaying to a W-boson pair at the LHC is reported. The event sample corresponds to an integrated luminosity of 4.9 fb−1 and 19.4 fb−1 collected with the CMS detector in pp ... -
Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at root s(NN)=2.76 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2014-04)Measurements are presented by the CMS Collaboration at the Large Hadron Collider (LHC) of the higher-order harmonic coefficients that describe the azimuthal anisotropy of charged particles emitted in root s(NN) = 2.76 TeV ... -
Measurement of inclusive W and Z boson production cross sections in pp collisions at root s=8 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2014-05-16)A measurement of total and fiducial inclusive W and Z boson production cross sections in pp collisions at root s = 8 TeV is presented. Electron and muon final states are analyzed in a data sample collected with the CMS ... -
Measurement of jet fragmentation in PbPb and pp collisions at root s(NN)=2.76 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2014-08)The jet fragmentation function of inclusive jets with transverse momentum p(T) above 100 GeV/c in PbPb collisions has been measured using reconstructed charged particles with p(T) above 1 GeV/c in a cone of radius 0.3 ... -
Measurement of jet fragmentation into charged particles in pp and PbPb collisions at root s(NN)=2.76 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2012-10)Jet fragmentation in pp and PbPb collisions at a centre-of-mass energy of 2.76 TeV per nucleon pair was studied using data collected with the CMS detector at the LHC. Fragmentation functions are constructed using ... -
Measurement of jet multiplicity distributions in t(t)over-bar production in pp collisions at root s=7TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2014-08)The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector. ... -
Measurement of masses in the t(t)over-tilde system by kinematic endpoints in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-07)A search for microscopic black holes and string balls is presented, based on a data sample of pp collisions at root s = 8 TeV recorded by the CMS experiment at the Large Hadron Collider and corresponding to an integrated ... -
Measurement of neutral strange particle production in the underlying event in proton-proton collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-09-01)Measurements are presented of the production of primary K-S(0) and Lambda particles in proton-proton collisions at root s = 7 TeV in the region transverse to the leading charged-particle jet in each event. The average ... -
Measurement of prompt J/psi pair production in pp collisions at root s = 7 Tev
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2014-09)Production of prompt J/psi meson pairs in proton-proton collisions at root s = 7 TeV is measured with the CMS experiment at the LHC in a data sample corresponding to an integrated luminosity of about 4.7 fb(-1). The two ... -
Measurement of pseudorapidity distributions of charged particles in proton-proton collisions at root s=8 TeV by the CMS and TOTEM experiments
Chatrchyan, S.; Işıldak, Bora (Springer Nature, 2014-10)Pseudorapidity ( ηη ) distributions of charged particles produced in proton–proton collisions at a centre-of-mass energy of 8 TeV TeV are measured in the ranges |η|<2.2|η|<2.2 and 5.3<|η|<6.45.3<|η|<6.4 covered by the ... -
Measurement of the azimuthal anisotropy of neutral pions in Pb-Pb collisions at root S-NN=2.76 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-01-25)irst measurements of the azimuthal anisotropy of neutral pions produced in Pb-Pb collisions at a center-of-mass energy of root S-NN = 2.76 TeV are presented. The amplitudes of the second Fourier component (upsilon(2)) of ...
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