Browsing by Author "1"
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Measurement of jet substructure observables in t¯t events from proton-proton collisions at √s = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2018-11-29)A measurement of jet substructure observables is presented using tt events in the lepton+jets channel from proton-proton collisions at s=13 TeV recorded by the CMS experiment at the LHC, corresponding to an integrated ... -
Measurement of long-range near-side two-particle angular correlations in pp collisions at s =13 TeV
Khachatryan, V.; Işıldak, Bora (2016-04-29)Results on two-particle angular correlations for charged particles produced in pp collisions at a center-of-mass energy of 13 TeV are presented. The data were taken with the CMS detector at the LHC and correspond to an ... -
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 and nonprompt J/psi production in pp and pPb collisions at root s(NN)=5.02 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer International Publishing, 2017-04)This paper reports the measurement of J/psi meson production in proton proton (pp) and proton lead (pPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV by the CMS experiment at the LW. The data samples ... -
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 prompt ψ (2S) to J /ψ yield ratios in Pb-Pb and p - p collisions at sNN =2.76 TeV
Khachatryan, V.; Işıldak, Bora (American Physical Society, 2014-12-31)The ratio between the prompt ψ(2S) and J/ψ yields, reconstructed via their decays into μ+μ−, is measured in Pb-Pb and p-p collisions at sNN−−−−√=2.76 TeV. The analysis is based on Pb-Pb and p-p data samples collected by ... -
Measurement of prompt ψ(2S) production cross sections in proton–lead and proton–proton collisions at √sNN = 5.02 TeV
Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2019-03-10)Measurements of prompt psi(2S) meson production cross sections in proton-lead (pPb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of root s(NN) = 5.02 TeV are reported. The results are based ... -
Measurement of properties of B 0 s → µ + µ − decays and search for B 0 → µ + µ − with the CMS experiment
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2020-04-28)Results are reported for the B 0s ! + branching fraction and effective lifetime and from a search for the decay B0 ! + . The analysis uses a data sample of proton-proton collisions accumulated by the CMS experiment in 2011, ... -
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 quark- and gluon-like jet fractions using jet charge in PbPb and pp collisions at 5.02 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2020-07-17)The momentum-weighted sum of the electric charges of particles inside a jet, known as jet charge, is sensitive to the electric charge of the particle initiating the parton shower. This paper presents jet charge distributions ... -
Measurement of spin correlations in tt production using the matrix element method in the muon+jets final state in pp collisions at √s=8 TeV
Khachatryan, V.; Işıldak, Bora (Elsevier, 2016-07-10)The consistency of the spin correlation strength in top quark pair production with the standard model (SM) prediction is tested in the muon+jets final state. The events are selected from pp collisions, collected by the CMS ... -
Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at s=13 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2020-08-19)Ratios of cross sections, sigma(Z + c jets)/sigma(Z + jets), sigma(Z + b jets)/sigma(Z + jets), and sigma(Z + c jets)/sigma(Z + b jets) in the associated production of a Z boson with at least one charm or bottom quark jet ... -
Measurement of the average very forward energy as a function of the track multiplicity at central pseudorapidities in proton-proton collisions at √s = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2019-11)The average total energy as well as its hadronic and electromagnetic components are measured with the CMS detector at pseudorapidities -6.6 < eta < -5.2 in proton-proton collisions at a centre-of-mass energy root s = 13 ... -
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 ... -
Measurement of the B-s(0) ->mu(+)mu(-) branching fraction and search for B-0 -> mu(+)mu(-) with the CMS experiment
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-09-06)Results are presented from a search for the rare decays B-s(0) -> mu(+) mu(-) and B-0 -> mu(+) mu(-) in pp collisions at root s = 7 and 8 TeV, with data samples corresponding to integrated luminosities of 5 and 20 fb(-1), ... -
Measurement of the charge asymmetry in top quark pair production in pp collisions at s =8 TeV using a template method
Khachatryan, V.; Işıldak, Bora (2016-02-01)The charge asymmetry in the production of top quark and antiquark pairs is measured in proton-proton collisions at a center-of-mass energy of 8 TeV. The data, corresponding to an integrated luminosity of 19.6 fb−1, were ... -
Measurement of the CP-violating weak phase φ<inf>s</inf> and the decay width difference δΓc using the B<inf>s</inf>0→J/ψφ(1020) decay channel in pp collisions at √ s=8 TeV
Khachatryan, V.; Işıldak, Bora (Elsevier, 2016)The CP-violating weak phase ϕs of the View the MathML source meson and the decay width difference ΔΓs of the View the MathML source light and heavy mass eigenstates are measured with the CMS detector at the LHC using a ... -
Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at s√ = 7 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2013-12)A study of proton-proton collisions in which two b hadrons are produced in association with a Z boson is reported. The collisions were recorded at a centre-of-mass energy of 7 TeVwith the CMS detector at the LHC, for an ... -
Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at √s = 13 TeV and constraints on anomalous quartic couplings
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2020-06-10)A measurement is presented of the cross section for electroweak production of a Z boson and a photon in association with two jets (Z gamma jj) in proton-proton collisions. The Z boson candidates are selected through their ...
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