Browsing by Author "Işıldak, Bora"
Now showing items 921-931 of 931
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Suppression and azimuthal anisotropy of prompt and nonprompt J/psi production in PbPb collisions at root S-NN=2.76 TeV
Khachatryan, V.; Işıldak, Bora (Springer International Publishing, 2017-04)The nuclear modification factor R-AA and the azimuthal anisotropy coefficient v(2) ofprompt and nonprompt (i.e. those from decays of b hadrons) J/psi mesons, measured from PbPb and pp collisions at root S-NN = 2.76 rfeV ... -
Suppression of excited Υ states relative to the ground state in Pb-Pb collisions at √sNN =5.02 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2018-04-02)The relative yields of gamma mesons produced in pp and Pb-Pb collisions at root s(NN) = 5.02 TeV and reconstructed via the dimuon decay channel are measured using data collected by the CMS experiment. Double ratios are ... -
Suppression of ϒ(1S), ϒ(2S), and ϒ(3S) quarkonium states in PbPb collisions at √sNN = 2.76 TeV
Işıldak, Bora (Elsevier, 2017)The production yields of ϒ(1S), ϒ(2S), and ϒ(3S) quarkonium states are measured through their decays into muon pairs in the CMS detector, in PbPb and pp collisions at the centre-of-mass energy per nucleon pair of 2.76 ... -
Tests of CMS hadron forward calorimeter upgrade readout box prototype
Chatrchyan, S.; Işıldak, Bora (IOP Publishing, 2012-10)A readout box prototype for the CMS Hadron Forward calorimeter upgrade was built and tested in the CERN H2 beamline. The prototype was designed to enable simultaneous tests of different readout options for the four anode ... -
Top pair spin correlation studies in CMS
Işıldak, Bora (Sissa Medialab Srl, 2021-02-08)Measurement of tt¯ spin correlations are presented in event with top quarks produced in pp collisions at the LHC. The data correspond to an integrated luminosities of 19.5 fb-1 at vs = 8 TeV and 36 fb-1 at vs = 13 TeV ... -
Transverse momentum spectra of inclusive b jets in pPb collisions at √sNN=5.02 TeV
Khachatryan, V.; Işıldak, Bora (Elsevier, 2016-03-10)We present a measurement of b jet transverse momentum (pT) spectra in proton-lead (pPb) collisions using a dataset corresponding to about 35 nb−1 collected with the CMS detector at the LHC. Jets from b quark fragmentation ... -
Two-particle azimuthal correlations in γp interactions using pPb collisions at √sNN = 8.16 TeV
Tumasyan, A.; Işıldak, Bora (Elsevier, 2023-09-10)The first measurements of the Fourier coefficients (VnΔ) of the azimuthal distributions of charged hadrons emitted from photon-proton (γp) interactions are presented. The data are extracted from 68.8 nb−1 of ultra-peripheral ... -
Upsilon (nS) polarizations versus particle multiplicity in pp collisions at root s=7 TeV
Khachatryan, V.; Işıldak, Bora (Elsevier, 2016-10)The polarizations of the Upsilon(1S), Upsilon(2S), and Upsilon(3S) mesons are measured as a function of the charged particle multiplicity in proton-proton collisions at root s = 7 TeV. The measurements are performed with ... -
Using Z boson events to study parton-medium interactions in Pb-Pb collisions
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2022-03-23)The spectra measurements of charged hadrons produced in the shower of a parton originating in the same hard scattering with a leptonically decaying Z boson are reported in lead-lead nuclei (Pb-Pb) and proton-proton (pp) ... -
The very forward CASTOR calorimeter of the CMS experiment
Sirunyan, A. M.; Işıldak, Bora (IOP Publishing, 2021-02-08)The physics motivation, detector design, triggers, calibration, alignment, simulation, and overall performance of the very forward CASTOR calorimeter of the CMS experiment are reviewed. The CASTOR Cherenkov sampling ... -
W + W − boson pair production in proton-proton collisions at √s = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2020-11-09)A measurement of the W+W- boson pair production cross section in proton-proton collisions at root s = 13 TeV is presented. The data used in this study are collected with the CMS detector at the CERN LHC and correspond to ...
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