Browsing by Author "Işıldak, Bora"
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Multiparticle correlation studies in pPb collisions at √sNN = 8.16 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2020-01-23)The second- and third-order azimuthal anisotropy Fourier harmonics of charged particles produced in pPb collisions, at root s(NN) = 8.16 TeV, are studied over a wide range of event multiplicities. Multiparticle correlations ... -
Multiparticle correlations and higher order harmonics in pPb collisions at √sNN = 8.16 TeV
Wang, Q.; Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2019-02)The elliptic and higher-order azimuthal anisotropy Fourier harmonics (v(n)) are obtained for pPb collisions at root s(NN) = 8.16 TeV over a wide range of event multiplicities based on multiparticle correlations. The data ... -
Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC
Khachatryan, V.; Işıldak, Bora (Elsevier, 2017-05-10)Measurements of strange hadron (K-S(0), Lambda +(Lambda) over bar, and Xi(-)+(Xi) over bar (+)) transverse momentum spectra in pp, pPb, and PbPb collisions are presented over a wide range of rapidity and event charged-particle ... -
Multiplicity and transverse momentum dependence of two- and four-particle correlations in pPb and PbPb collisions
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2013-07-23)Measurements of two- and four-particle angular correlations for charged particles emitted in pPb collisions are presented over a wide range in pseudorapidity and full azimuth. The data, corresponding to an integrated ... -
MUSiC: a model-unspecific search for new physics in proton–proton collisions at √s=13TeV
Sirunyan, A. M.; Işıldak, Bora (Springer, 2021-07-19)Results of the Model Unspecific Search in CMS (MUSiC), using proton–proton collision data recorded at the LHC at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 35.9fb-1, are presented. The ... -
A new boson with a mass of 125 GeV observed with the CMS experiment at the large hadron collider
Chatrchyan, S.; Işıldak, Bora (American Association for the Advancement of Science, 2012-12-21)The Higgs boson was postulated nearly five decades ago within the framework of the standard model of particle physics and has been the subject of numerous searches at accelerators around the world. Its discovery would ... -
A new calibration method for charm jet identification validated with proton-proton collision events at √s = 13 TeV
Tumasyan, A.; Işıldak, Bora (IOP Publishing, 2022-03-17)Many measurements at the LHC require efficient identification of heavy-flavour jets, i.e. jets originating from bottom (b) or charm (c) quarks. An overview of the algorithms used to identify c jets is described and a novel ... -
Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at root s(NN)=5.02 TeV
Khachatryan, V.; Işıldak, Bora (Springer Nature, 2015-05)Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at sNN−−−√=5.02sNN=5.02 TeVTeV , in the range 0.4<pT<1200.4<pT<120 GeV/cGeV/c and pseudorapidity ... -
Nuclear modification of Y states in pPb collisions at √sNN = 5.02 TeV
Tumasyan, A.; Işıldak, Bora (Elsevier, 2022-12-10)Production cross sections of [Formula presented], [Formula presented], and [Formula presented] states decaying into [Formula presented] in proton-lead (pPb) collisions are reported using data collected by the CMS experiment ... -
Observation of t ¯ t H production
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2018-06-04)The observation of Higgs boson production in association with a top quark-antiquark pair is reported, based on a combined analysis of proton-proton collision data at center-of-mass energies of root s = 7, 8, and 13 TeV, ... -
Observation of a diffractive contribution to dijet production in proton-proton collisions at root s = 7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-01-08)The cross section for dijet production in proton-proton collisions at root s = 7 TeV is presented as a function of (xi) over tilde, a variable that approximates the fractional momentum loss of the scattered proton in ... -
Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2012-09-17)Results are presented from searches for the standard model Higgs boson in proton-proton collisions at root s = 7 and 8 TeV in the Compact Muon Solenoid experiment at the LHC, using data samples corresponding to integrated ... -
Observation of a new boson with mass near 125 GeV in pp collisions at root s=7 and 8 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-06)A detailed description is reported of the analysis used by the CMS Collaboration in the search for the standard model Higgs boson in pp collisions at the LHC, which led to the observation of a new boson. The data sample ... -
Observation of a new excited beauty strange baryon decaying to Ξb- π+π-
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2021-06-25)The Ξb-π+π- invariant mass spectrum is investigated with an event sample of proton-proton collisions at s=13 TeV, collected by the CMS experiment at the LHC in 2016-2018 and corresponding to an integrated luminosity of 140 ... -
Observation of a new Xi(b) baryon
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2012-06-22)The observation of a new b baryon via its strong decay into Xi(-)(b)pi(+) (plus charge conjugates) is reported. The measurement uses a data sample of pp collisions at root s = 7 TeV collected by the CMS experiment at the ... -
Observation of a peaking structure in the J/psi phi mass spectrum from B-+/- -> J/psi phi K-+/- decays
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2014-06-27)A peaking structure in the J/psi phi mass spectrum near threshold is observed in B-+/- -> J/psi phi K-+/- decays, produced in pp collisions at root s = 7 TeV collected with the CMS detector at the LHC. The data sample, ... -
Observation of B0 → ψ (2S)K0Sπ+π− and B0s → ψ (2S)K0S decays
Tumasyan, A.; Işıldak, Bora (Springer, 2022-05-31) -
Observation of B0 s mesons and measurement of the B0 s /B+ yield ratio in PbPb collisions at √snn = 5.02 TeV
Tumasyan, A.; Işıldak, Bora (Elsevier, 2022-06-10)The Bs 0 and B+ production yields are measured in PbPb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, corresponds to an integrated luminosity ... -
Observation of charge-dependent azimuthal correlations in p-Pb collisions and its implication for the search for the chiral magnetic effect
Khachatryan, V.; Işıldak, Bora (APS, 2017)Charge-dependent azimuthal particle correlations with respect to the second-order event plane in p−Pb and PbPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV have been studied with the CMS experiment at ... -
Observation of electroweak production of Wγwith two jets in proton-proton collisions at √s=13 TeV
Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2020-12-10)A first observation is presented for the electroweak production of a W boson, a photon, and two jets in proton-proton collisions. The W boson decays are selected by requiring one identified electron or muon and an imbalance ...
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