Browsing Natural and Mathematical Sciences by Author "The CMS Collaboration"
Now showing items 41-60 of 891
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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 parton distribution functions and extraction of the strong coupling constant from the inclusive jet cross section in pp collisions at root s=7TeV
Khachatryan, V.; Işıldak, Bora (Springer, 2015-06)The inclusive jet cross section for proton–proton collisions at a centre-of-mass energy of 7 TeVTeV was measured by the CMS Collaboration at the LHC with data corresponding to an integrated luminosity of 5.0 fb−1fb−1 . The ... -
Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2014-07-09)Constraints are presented on the total width of the recently discovered Higgs boson, Gamma(H), using its relative on-shell and off-shell production and decay rates to a pair of Z bosons, where one Z boson decays to an ... -
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 pMSSM, AMSB model and on other models from the search for long-lived charged particles in proton–proton collisions at s√=8TeV
Khachatryan, V.; Işıldak, Bora (Springer, 2015-07-15)Stringent limits are set on the long-lived lepton-like sector of the phenomenological minimal supersymmetric standard model (pMSSM) and the anomaly-mediated supersymmetry breaking (AMSB) model. The limits are derived from ... -
Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV
Khachatryan, V.; Işıldak, Bora (American Physical Society, 2015-07-13)The study of the spin-parity and tensor structure of the interactions of the recently discovered Higgs boson is performed using the H→ZZ,Zγ∗,γ∗γ∗→4ℓ, H→WW→ℓνℓν, and H→γγ decay modes. The full data set recorded by the CMS ... -
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 ... -
Correlations between jets and charged particles in PbPb and pp collisions at s<inf>NN</inf>=2.76 TeV
Khachatryan, V.; Işıldak, Bora (Springer International Publishing, 2016-02)The quark-gluon plasma is studied via medium-induced changes to correlations between jets and charged particles in PbPb collisions compared to pp reference data. This analysis uses data sets from PbPb and pp collisions ... -
Correlations of azimuthal anisotropy Fourier harmonics with subevent cumulants in pPb collisions at √sNN = 8.16 TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2021-01-14)Event-by-event long-range correlations of azimuthal anisotropy Fourier coefficients ( v n ) in 8.16 TeV p Pb data, collected by the CMS experiment at the CERN Large Hadron Collider, are extracted using a subevent ... -
Cross section measurement of t-channel single top quark production in pp collisions at √s = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2017-09-10)The cross section for the production of single top quarks in the t channel is measured in proton- proton collisions at 13TeV with the CMS detector at the LHC. The analyzed data correspond to an integrated luminosity of ... -
D0-meson RAA in PbPb collisions at √sNN = 5.02 TeV and elliptic flow in pPb collisions at √sNN = 8.16 TeV with CMS
Shi, Z.; Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2019-02)The study of charm production in heavy-ion collisions is considered an excellent probe for the properties of the hot and dense medium created in heavy-ion collisions. Measurements of D-0-meson nuclear modification factor ... -
Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at √=2.76sNN=2.76 TeV
Khachatryan, V.; Işıldak, Bora (Springer International Publishing, 2016)Interactions between jets and the quark-gluon plasma produced in heavy ion collisions are studied via the angular distributions of summed charged-particle transverse momenta (pT) with respect to both the leading and ... -
Dependence of inclusive jet production on the anti-kT distance parameter in pp collisions at s√ = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2020-12-11)The dependence of inclusive jet production in proton-proton collisions with a center-of-mass energy of 13 TeV on the distance parameter R of the anti-k(T) algorithm is studied using data corresponding to integrated ... -
Description and performance of track and primary-vertex reconstruction with the CMS tracker
Chatrchyan, S.; Işıldak, Bora (IOP Publishing, 2014-10)A description is provided of the software algorithms developed for the CMS tracker both for reconstructing charged-particle trajectories in proton-proton interactions and for using the resulting tracks to estimate the ... -
Determination of the strong coupling constant αS(mZ) from measurements of inclusive W± and Z boson production cross sections in proton-proton collisions at √s = 7 and 8 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2020-06-01)Twelve measurements of inclusive cross sections of W-+/- and Z boson production, performed in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV, are compared with perturbative quantum chromodynamics ... -
Determination of the top-quark pole mass and strong coupling constant from the tt production cross section in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2014-01-20)The inclusive cross section for top-quark pair production measured by the CMS experiment in proton–proton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order ... -
Development and validation of HERWIG 7 tunes from CMS underlying-event measurements
Sirunyan, A. M.; Işıldak, Bora (Springer, 2021-04-12)This paper presents new sets of parameters (“tunes”) for the underlying-event model of the HERWIG7 event generator. These parameters control the description of multiple-parton interactions (MPI) and colour reconnection in ... -
Differential cross section measurements for the production of a W boson in association with jets in proton-proton collisions at s = 7 TeV
Khachatryan, V.; Işıldak, Bora (Elsevier, 2015-02-04)Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse ... -
Distributions of topological observables in inclusive three- and four-jet events in pp collisions at s√=7s=7TeV
Khachatryan, V.; Işıldak, Bora (Springer, 2015-07)This paper presents distributions of topological observables in inclusive three- and four-jet events produced in pp collisions at a centre-of-mass energy of 7 TeVTeV with a data sample collected by the CMS experiment ... -
Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC
Sirunyan, A. M.; Işıldak, Bora (IOP Publishing, 2021-05)The performance is presented of the reconstruction and identification algorithms for electrons and photons with the CMS experiment at the LHC. The reported results are based on proton-proton collision data collected at a ...
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