Search
Results
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Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks
(2017)Physics Letters BA search for heavy resonances decaying to a Higgs boson and a vector boson is presented. The analysis is performed using data samples collected in 2015 by the CMS experiment at the LHC in proton–proton collisions at a center-of-mass energy of 13 TeV, corresponding to integrated luminosities of 2.2–2.5 fb−1. The search is performed in channels in which the vector boson decays into leptonic final states (Z→νν, W→ℓν, and Z→ℓℓ, with ℓ=e,μ), ...Journal Article -
Measurement of differential cross sections for top quark pair production using the lepton+jets final state in proton-proton collisions at 13 TeV
(2017)Physical Review DDifferential and double-differential cross sections for the production of top quark pairs in proton-proton collisions at 13 TeV are measured as a function of jet multiplicity and of kinematic variables of the top quarks and the top quark-antiquark system. This analysis is based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 2.3 fb−1. The measurements are performed in the lepton þ jets decay ...Journal Article -
Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search
(2017)Physics Letters BA search for the resonant production of high-mass photon pairs is presented. The search focuses on spin-0 and spin-2 resonances with masses between 0.5 and 4.5TeV, and with widths, relative to the mass, between 1.4 ×10−4and 5.6 ×10−2. The data sample corresponds to an integrated luminosity of 12.9fb−1of proton–proton collisions collected with the CMS detector in 2016 at a center-of-mass energy of 13TeV. No significant excess is observed ...Journal Article -
Measurements of the differential production cross sections for a Z boson in association with jets in pp collisions at √s = 8 TeV
(2017)Journal of High Energy PhysicsCross sections for the production of a Z boson in association with jets in proton-proton collisions at a centre-of-mass energy of s√=8 TeV are measured using a data sample collected by the CMS experiment at the LHC corresponding to 19.6 fb−1. Differential cross sections are presented as functions of up to three observables that describe the jet kinematics and the jet activity. Correlations between the azimuthal directions and the rapidities ...Journal Article -
Suppression and azimuthal anisotropy of prompt and nonprompt J/ψ production in PbPb collisions at √sNN = 2.76 TeV
(2017)The European Physical Journal CThe nuclear modification factor RAA and the azimuthal anisotropy coefficient v2 of prompt and nonprompt (i.e. those from decays of b hadrons) J/ψ mesons, measured from PbPb and pp collisions at √sNN = 2.76 TeVat the LHC, are reported. The results are presented in several event centrality intervals and several kinematic regions, for transverse momenta pT > 6.5GeV/c and rapidity |y| < 2.4, extending down to pT = 3GeV/c in the 1.6 < |y| < ...Journal Article -
Measurement of the WZ production cross section in pp collisions at s√ = 7 and 8 TeV and search for anomalous triple gauge couplings at s√ = 8 TeV
(2017)The European Physical Journal CThe WZ production cross section is measured by the CMS experiment at the CERN LHC in proton–proton collision data samples corresponding to integrated luminosities of 4.9fb−1 collected at s√=7TeV, and 19.6fb−1 at s√=8TeV. The measurements are performed using the fully-leptonic WZ decay modes with electrons and muons in the final state. The measured cross sections for 71<mZ<111GeV are σ(pp→WZ; s√=7TeV)=20.14±1.32(stat)±0.38(theo)±1.06(exp ...Journal Article -
Charged-particle nuclear modification factors in PbPb and pPb collisions at √sNN=5.02 TeV
(2017)Journal of High Energy PhysicsThe spectra of charged particles produced within the pseudorapidity window |η| < 1 at sNN−−−−√=5.02 TeV are measured using 404 μb−1 of PbPb and 27.4 pb−1 of pp data collected by the CMS detector at the LHC in 2015. The spectra are presented over the transverse momentum ranges spanning 0.5 < p T < 400 GeV in pp and 0.7 < p T < 400 GeV in PbPb collisions. The corresponding nuclear modification factor, R AA, is measured in bins of collision ...Journal Article -
Measurement of the WZ production cross section in pp collisions at √s=13 TeV
(2017)Physics Letters BThe WZ production cross section in proton–proton collisions at s=13 TeV is measured with the CMS experiment at the LHC using a data sample corresponding to an integrated luminosity of 2.3 fb−1. The measurement is performed in the leptonic decay modes WZ→ℓνℓ′ℓ′, where ℓ,ℓ′=e,μ. The measured cross section for the range 60<mℓ′ℓ′<120 GeV is σ(pp→WZ)=39.9±3.2(stat) (syst)−3.1+2.9±0.4(theo)±1.3(lumi) pb, consistent with the standard model prediction.Journal Article -
Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV
(2017)Journal of High Energy PhysicsThe results of a first search for CP violation in the production and decay of top quark-antiquark (tt¯) pairs are presented. The search is based on asymmetries in T-odd, triple-product correlation observables, where T is the time-reversal operator. The analysis uses a sample of proton-proton collisions at s√=8 TeV collected by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb−1. Events are selected having one electron ...Journal Article -
Measurements of differential cross sections for associated production of a W boson and jets in proton-proton collisions at √s = 8 TeV
(2017)Physical Review DDifferential cross sections for a W boson produced in association with jets are measured in a data sample of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the CMS detector and corresponding to an integrated luminosity of 19.6 fb−1. The W bosons are identified through their decay mode W→μν. The cross sections are reported as functions of jet multiplicity, transverse momenta, and the scalar sum of jet transverse ...Journal Article