Browsing Faculty of Engineering by Author "Işıldak, Bora"
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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 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 ...
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