Suche
Ergebnisse
-
Search for supersymmetry in events with a photon, jets, b -jets, and missing transverse momentum in proton–proton collisions at 13TeV
(2019)The European Physical Journal CA search for supersymmetry is presented based on events with at least one photon, jets, and large missing transverse momentum produced in proton–proton collisions at a center-of-mass energy of 13TeV. The data correspond to an integrated luminosity of 35.9fb−1 and were recorded at the LHC with the CMS detector in 2016. The analysis characterizes signal-like events by categorizing the data into various signal regions based on the number of ...Journal Article -
Search for associated production of a Higgs boson and a single top quark in proton-proton collisions at s =13 TeV
(2019)Physical Review DA search is presented for the production of a Higgs boson in association with a single top quark, based on data collected in 2016 by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV, which corresponds to an integrated luminosity of 35.9 fb−1. The production cross section for this process is highly sensitive to the absolute values of the top quark Yukawa coupling, yt; the Higgs boson coupling to vector bosons, gHVV; and, ...Journal Article -
Measurement of the t t ¯ production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at √s=13Te
(2019)The European Physical Journal CA measurement of the top quark–antiquark pair production cross section σtt¯ in proton–proton collisions at a centre-of-mass energy of 13TeV is presented. The data correspond to an integrated luminosity of 35.9fb−1, recorded by the CMS experiment at the CERN LHC in 2016. Dilepton events (e ± μ ∓, μ+μ−, e+e−) are selected and the cross section is measured from a likelihood fit. For a top quark mass parameter in the simulation of mMCt=172.5GeV ...Journal Article -
Measurement of inclusive very forward jet cross sections in proton-lead collisions at √sNN = 5.02 TeV
(2019)Journal of High Energy PhysicsMeasurements of differential cross sections for inclusive very forward jet production in proton-lead collisions as a function of jet energy are presented. The data were collected with the CMS experiment at the LHC in the laboratory pseudorapidity range −6.6 < η < −5.2. Asymmetric beam energies of 4 TeV for protons and 1.58 TeV per nucleon for Pb nuclei were used, corresponding to a center-of-mass energy per nucleon pair of √sNN = 5.02 ...Journal Article -
Search for a low-mass τ−τ+ resonance in association with a bottom quark in proton-proton collisions at s√ = 13 TeV
(2019)Journal of High Energy PhysicsA general search is presented for a low-mass τ−τ+ resonance produced in association with a bottom quark. The search is based on proton-proton collision data at a center-of-mass energy of 13 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 fb−1. The data are consistent with the standard model expectation. Upper limits at 95% confidence level on the cross section times branching fraction are ...Journal Article -
Jet Shapes of Isolated Photon-Tagged Jets in Pb-Pb and pp Collisions at sNN =5.02 TeV
(2019)Physical Review LettersJournal Article -
Observation of prompt J/ψ meson elliptic flow in high-multiplicity pPb collisions at √s=8.16 TeV
(2019)Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy PhysicsA measurement of the elliptic flow (v2) of prompt J/Ψ mesons in high-multiplicity pPb collisions is reported using data collected by the CMS experiment at a nucleon-nucleon center-of-mass energy √sNN=8.16 TeV. Prompt J/Ψ mesons decaying into two muons are reconstructed in the rapidity region in the nucleon-nucleon center-of-mass frame (Ycm), corresponding to either -2.86 < Ycm < -1.86 or 0.94 < Ycm y 1.94. The average v2 result from the ...Journal Article -
Measurements of properties of the Higgs boson decaying to a W boson pair in pp collisions at s=13TeV
(2019)Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy PhysicsMeasurements of the production of the standard model Higgs boson decaying to a W boson pair are reported. The W+W- candidates are selected in events with an oppositely charged lepton pair, large missing transverse momentum, and various numbers of jets. To select Higgs bosons produced via vector boson fusion and associated production with a W or Z boson, events with two jets or three or four leptons are also selected. The event sample ...Journal Article -
Search for vector-like quarks in events with two oppositely charged leptons and jets in proton-proton collisions at root s=13TeV
(2019)The European Physical Journal CA search for the pair production of heavy vector-like partners T and B of the top and bottom quarks has been performed by the CMS experiment at the CERN LHC using proton–proton collisions at s√=13TeV. The data sample was collected in 2016 and corresponds to an integrated luminosity of 35.9fb−1. Final states studied for TT¯¯¯¯ production include those where one of the T quarks decays via T→tZ and the other via T→bW, tZ, or tH, where H is ...Journal Article -
Search for resonant production of second-generation sleptons with same-sign dimuon events in proton–proton collisions at √s=13TeV
(2019)The European Physical Journal CA search is presented for resonant production of second-generation sleptons (μ˜L, ν˜μ) via the R-parity-violating coupling λ′211 to quarks, in events with two same-sign muons and at least two jets in the final state. The smuon (muon sneutrino) is expected to decay into a muon and a neutralino (chargino), which will then decay into a second muon and at least two jets. The analysis is based on the 2016 data set of proton-proton collisions ...Journal Article