Browsing Natural and Mathematical Sciences by Author "Tumasyan, A."
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Measurement of the differential t t ¯production cross section as a function of the jet mass and extraction of the top quark mass in hadronic decays of boosted top quarks
Tumasyan, A.; Işıldak, Bora (Springer, 2023-07-03)A measurement of the jet mass distribution in hadronic decays of Lorentz-boosted top quarks is presented. The measurement is performed in the lepton + jets channel of top quark pair production (t t ¯) events, where the ... -
Measurement of the Drell-Yan forward-backward asymmetry at high dilepton masses in proton-proton collisions at s√ = 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2022-08)A measurement of the forward-backward asymmetry of pairs of oppositely charged leptons (dimuons and dielectrons) produced by the Drell-Yan process in proton-proton collisions is presented. The data sample corresponds to ... -
Measurement of the electroweak production of Z γ and two jets in proton-proton collisions at √s = 13 TeV and constraints on anomalous quartic gauge couplings
Tumasyan, A.; Işıldak, Bora (American Physical Society, 2021-10-05)The first observation of the electroweak (EW) production of a Z boson, a photon, and two forward jets (Zγjj) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. A data set corresponding to an ... -
Measurement of the Higgs boson inclusive and differential fiducial production cross sections in the diphoton decay channel with pp collisions at √s = 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2023-07-12)The measurements of the inclusive and differential fiducial cross sections of the Higgs boson decaying to a pair of photons are presented. The analysis is performed using proton-proton collisions data recorded with the CMS ... -
Measurement of the Higgs boson width and evidence of its off-shell contributions to ZZ production
Tumasyan, A.; Işıldak, Bora (Nature Research, 2022-11)Since the discovery of the Higgs boson in 2012, detailed studies of its properties have been ongoing. Besides its mass, its width—related to its lifetime—is an important parameter. One way to determine this quantity is to ... -
Measurement of the inclusive and differential higgs boson production cross sections in the decay mode to a pair of τ leptons in pp collisions at √ s = 13 TeV
Tumasyan, A.; Işıldak, Bora (American Physical Society, 2022-02-23)Measurements of the inclusive and differential fiducial cross sections of the Higgs boson are presented, using the τ lepton decay channel. The differential cross sections are measured as functions of the Higgs boson ... -
Measurement of the inclusive and differential t t¯ γ cross sections in the single-lepton channel and EFT interpretation at √s = 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2021-12-23)The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The data set, corresponding to an integrated luminosity of 137 ... -
Measurement of the inclusive and differential tt¯ γ cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at s√ = 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2022-05-16)The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions in the decay channel with two oppositely charged leptons (e±μ∓, e+e−, or μ+μ−). The measurement is ... -
Measurement of the inclusive and differential WZ production cross sections, polarization angles, and triple gauge couplings in pp collisions at s√ = 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2022-07)The associated production of a W and a Z boson is studied in final states with multiple leptons produced in proton-proton (pp) collisions at a centre-of-mass energy of 13 TeV using 137 fb−1 of data collected with the CMS ... -
Measurement of the inclusive tt¯ production cross section in proton-proton collisions at s√ = 5.02 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2022-04-22)The top quark pair production cross section is measured in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data were collected in a special LHC low-energy and low-intensity run in 2017, and correspond ... -
Measurement of the production cross section for Z + b jets in proton-proton collisions at √s = 13 TeV
Tumasyan, A.; Işıldak, Bora (American Physical Society, 2022-05-31)The measurement of the cross section for the production of a Z boson, decaying to dielectrons or dimuons, in association with at least one bottom quark jet is performed with proton-proton collision data at s=13 TeV. The ... -
Measurement of the top quark mass using a profile likelihood approach with the lepton + jets final states in proton–proton collisions at √s = 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2023-10-25)The mass of the top quark is measured in 36.3 fb-1 of LHC proton–proton collision data collected with the CMS detector at s=13TeV . The measurement uses a sample of top quark pair candidate events containing one isolated ... -
Measurement of the top quark mass using events with a single reconstructed top quark in pp collisions at √s = 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2021-12-21)A measurement of the top quark mass is performed using a data sample enriched with single top quark events produced in the t channel. The study is based on proton- proton collision data, corresponding to an integrated ... -
Measurement of the top quark pole mass using t¯t+jet events in the dilepton final state in proton-proton collisions at √s = 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2023-07-10)A measurement of the top quark pole mass m(t)(pole) in events where a top quarkantiquark pair (t (t) over bar) is produced in association with at least one additional jet ( t (t) over bar +jet) is presented. This analysis ... -
Measurement of W ± γ differential cross sections in proton-proton collisions at √s = 13 TeV and effective field theory constraints
Tumasyan, A.; Işıldak, Bora (American Physical Society, 2022-03-09)Differential cross section measurements of W±γ production in proton-proton collisions at s=13 TeV are presented. The data set used in this study was collected with the CMS detector at the CERN LHC in 2016-2018 with an ... -
Measurements of Higgs boson production in the decay channel with a pair of τ leptons in proton–proton collisions at √s=13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2023-07-04)Measurements of Higgs boson production, where the Higgs boson decays into a pair of τ leptons, are presented, using a sample of proton-proton collisions collected with the CMS experiment at a center-of-mass energy of ... -
Measurements of jet multiplicity and jet transverse momentum in multijet events in proton–proton collisions at √s = 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2023-08-22)Multijet events at large transverse momentum (pT) are measured at s=13TeV using data recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of 36.3fb-1 . The multiplicity of jets with pT>50GeV ... -
Measurements of the associated production of a W boson and a charm quark in proton–proton collisions at √s=8TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2022-12-05)Measurements of the associated production of a W boson and a charm (c) quark in proton–proton collisions at a centre-of-mass energy of 8TeV are reported. The analysis uses a data sample corresponding to a total integrated ... -
Measurements of the azimuthal anisotropy of prompt and nonprompt charmonia in PbPb collisions at √sNN=5.02 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2023-10-19)The second-order (v(2)) and third-order (v(3)) Fourier coefficients describing the azimuthal anisotropy of prompt and nonprompt (from b-hadron decays) J/psi, as well as prompt psi(2S) mesons are measured in lead-lead ... -
Measurements of the electroweak diboson production cross sections in proton-proton collisions at √s = 5.02 TeV using leptonic decays
Tumasyan, A.; Işıldak, Bora (American Physical Society, 2021-11-02)The first measurements of diboson production cross sections in proton-proton interactions at a center-of-mass energy of 5.02 TeV are reported. They are based on data collected with the CMS detector at the LHC, corresponding ...
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