Browsing by Author "Sirunyan, A. M."
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Angular analysis of the decay B + → K + μ + μ − in proton-proton collisions at √s =8 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2018-12-01)The angular distribution of the flavor-changing neutral current decay B+→K+μ+μ- is studied in proton-proton collisions at a center-of-mass energy of 8 TeV. The analysis is based on data collected with the CMS detector at ... -
Angular analysis of the decay B + → K ∗ (892) +µ +µ − in proton-proton collisions at √s = 8 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer, 2021-01-14)Angular distributions of the decay B+→ K∗(892)+μ+μ− are studied using events collected with the CMS detector in s = 8 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 20.0 fb−1. The ... -
Azimuthal anisotropy of charged particles with transverse momentum up to 100 GeV/c in PbPb collisions at √sNN= 5.02 TeV
Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2018-01)The Fourier coefficients v(2) and v(3) characterizing the anisotropy of the azimuthal distribution of charged particles produced in PbPb collisions at root S-NN = 5.02 TeV are measured with data collected by the CMS ... -
Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in pp collisions at s√=13TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2019-09)A measurement for inclusive 2- and 3-jet events of the azimuthal correlation between the two jets with the largest transverse momenta, Delta phi(12), is presented. The measurement considers events where the two leading ... -
Beyond nPDFs effects: prompt J/ψ and ψ(2S) production in pPb and pp collisions
Oh, G.; Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2019-02)A multi-dimensional analysis of prompt charmonia in pp and pPb collisions at root s(NN) = 5.02 TeV with the CMS detector is presented. The pPb differential cross-sections of prompt J/psi are shown in a wide kinematic region, ... -
Bose-Einstein correlations of charged hadrons in proton-proton collisions at s√ = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2020-03-03)Bose-Einstein correlations of charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons in proton-proton collisions at <mml:msqrt>s</mml:msqrt> = 13 ... -
Calibration of the CMS hadron calorimeters using proton-proton collision data at √s = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (IOP Publishing, 2020-05)Methods are presented for calibrating the hadron calorimeter system of theCMSetector at the LHC. The hadron calorimeters of the CMS experiment are sampling calorimeters of brass and scintillator, and are in the form of one ... -
Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions at √sNN = 5.02 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2019-08-01)The almost hermetic coverage of the CMS detector is used to measure the distribution of transverse energy, E-T, over 13.2 units of pseudorapidity, eta, for pPb collisions at a center-of-mass energy per nucleon pair of root ... -
Charged-particle angular correlations in XeXe collisions at √sNN = 5.44 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2019-10-03)Azimuthal correlations of charged particles in xenon-xenon collisions at a center-of-mass energy per nucleon pair of root s(NN) = 5.44 TeV are studied. The data were collected by the CMS experiment at the LHC with a total ... -
Charged-particle nuclear modification factors in XeXe collisions at √sNN=5.44 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2018-10)The differential yields of charged particles having pseudorapidity within vertical bar eta vertical bar < 1 are measured using xenon-xenon (XeXe) collisions at root S-NN = 5.44 TeV. The data, corresponding to an integrated ... -
Combination of CMS searches for heavy resonances decaying to pairs of bosons or leptons
Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2019-11-10)A statistical combination of searches for heavy resonances decaying to pairs of bosons or leptons is presented. The data correspond to an integrated luminosity of 35.9 fb(-1) collected during 2016 by the CMS experiment at ... -
Combination of searches for higgs boson pair production in proton-proton collisions at √ s = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2019-03-29)This Letter describes a search for Higgs boson pair production using the combined results from four final states: bb gamma gamma, bb tau tau, bbbb, and bbVV, where V represents a W or Z boson. The search is performed using ... -
Combined measurements of Higgs boson couplings in proton–proton collisions at √s = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2019-05-20)Combined measurements of the production and decay rates of the Higgs boson, as well as its couplings to vector bosons and fermions, are presented. The analysis uses the LHC proton-proton collision data set recorded with ... -
Combined search for supersymmetry with photons in proton-proton collisions at √s=13 TeV
Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2020-02-10)A combination of four searches for new physics involving signatures with at least one photon and large missing transverse momentum, motivated by generalized models of gauge-mediated supersymmetry (SUSY) breaking, is ... -
Constraining gluon distributions in nuclei using dijets in proton-proton and proton-lead collisions at √sNN = 5.02 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2018-08-07)The pseudorapidity distributions of dijets as functions of their average transverse momentum (p(T)(ave)) are measured in proton-lead (pPb) and proton-proton (pp) collisions. The data samples were collected by the CMS ... -
Constraints on anomalous Higgs boson couplings to vector bosons and fermions in its production and decay using the four-lepton final state
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2021-09-17)Studies of CP violation and anomalous couplings of the Higgs boson to vector bosons and fermions are presented. The data were acquired by the CMS experiment at the LHC and correspond to an integrated luminosity of 137 fb-1 ... -
Constraints on anomalous HVV couplings from the production of Higgs bosons decaying to τ lepton pairs
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2019-12-04)A study is presented of anomalous HVV interactions of the Higgs boson, including its CP properties. The study uses Higgs boson candidates produced mainly in vector boson fusion and gluon fusion that subsequently decay to ... -
Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at √s = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2018-08-10)The results of a previous search by the CMS Collaboration for squarks and gluinos are reinterpreted to constrain models of leptoquark (LQ) production. The search considers jets in association with a transverse momentum ... -
Constraints on the initial state of Pb-Pb collisions via measurements of Z -Boson yields and azimuthal anisotropy at √ sNN = 5.02 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2021-08-31)The CMS experiment at the LHC has measured the differential cross sections of Z bosons decaying to pairs of leptons, as functions of transverse momentum and rapidity, in lead-lead collisions at a nucleon-nucleon center-of-mass ... -
Constraints on the χ c1 versus χ c2 polarizations in proton-proton collisions at √s = 8 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2020-04-24)The polarizations of promptly produced chi(c1) and chi(c2) mesons are studied using data collected by the CMS experiment at the LHC, in proton-proton collisions at root s = 8 TeV. The chi(c) states are reconstructed via ...
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