Search
Results
-
Search for an Lμ − Lτ gauge boson using Z → 4μ events in proton-proton collisions at s=13 TeV
(2019)Physics Letters BA search for a narrow gauge boson with a mass between 5 and 70 GeV resulting from an local gauge symmetry is reported. Theories that predict such a particle have been proposed as an explanation of various experimental discrepancies, including the lack of a dark matter signal in direct-detection experiments, tension in the measurement of the anomalous magnetic moment of the muon, and reports of possible lepton flavor universality violation ...Journal Article -
Measurement and interpretation of differential cross sections for Higgs boson production at s=13TeV
(2019)Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy PhysicsDifferential Higgs boson (H) production cross sections are sensitive probes for physics beyond the standard model. New physics may contribute in the gluon-gluon fusion loop, the dominant Higgs boson production mechanism at the LHC, and manifest itself through deviations from the distributions predicted by the standard model. Combined spectra for the H -> ϒϒ, H-> ZZ, and H -> bb decay channels and the inclusive Higgs boson production cross ...Journal Article -
Measurements of triple-differential cross sections for inclusive isolated-photon+jet events in p p collisions at √s=8TeV
(2019)The European Physical Journal CMeasurements are presented of the triple-differential cross section for inclusive isolated-photon+jet events in pp collisions at s√=8 TeV as a function of photon transverse momentum (pγT), photon pseudorapidity (ηγ), and jet pseudorapidity (ηjet). The data correspond to an integrated luminosity of 19.7fb−1 that probe a broad range of the available phase space, for |ηγ|<1.44 and 1.57<|ηγ|<2.50, |ηjet|<2.5, 40<pγT<1000 GeV, and jet transverse ...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 -
Search for the production of W±W±W events at s =13 TeV
(2019)Physical Review DA search for the production of events containing three W bosons predicted by the standard model is reported. The search is based on a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the CMS experiment at the CERN LHC and corresponding to a total integrated luminosity of 35.9 fb−1. The search is performed in final states with three leptons (electrons or muons), or with two same-charge leptons plus ...Journal Article -
Search for Higgs boson pair production in the γγbb‾ final state in pp collisions at s=13TeV
(2019)Physics Letters BA search is presented for the production of a pair of Higgs bosons, where one decays into two photons and the other one into a bottom quark–antiquark pair. The analysis is performed using proton–proton collision data at s=13TeV recorded in 2016 by the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb-1. The results are in agreement with standard model (SM) predictions. In a search for resonant production, upper ...Journal Article -
Observation of Single Top Quark Production in Association with a Z Boson in Proton-Proton Collisions at s =13 TeV
(2019)Physical Review LettersThe observation of single top quark production in association with a Z boson and a quark (tZq) is reported. Events from proton-proton collisions at a center-of-mass energy of 13 TeV containing three charged leptons (either electrons or muons) and at least two jets are analyzed. The data were collected with the CMS detector in 2016 and 2017 and correspond to an integrated luminosity of 77.4fb−1. The increased integrated luminosity, a ...Journal Article -
Measurement of B0s meson production in pp and PbPb collisionsat √sNN=5.02 TeV
(2019)Physics Letters BThe production cross sections of Bs 0 mesons and charge conjugates are measured in proton-proton (pp) and PbPb collisions via the exclusive decay channel Bs 0→J/ψϕ→μ+μ−K+K− at a center-of-mass energy of 5.02 TeV per nucleon pair and within the rapidity range |y|<2.4 using the CMS detector at the LHC. The pp measurement is performed as a function of transverse momentum (pT) of the Bs 0 mesons in the range of 7 to 50 GeV/c and is compared ...Journal Article -
Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at √sNN=5.02TeV
(2019)Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy PhysicsEvidence for the light-by-light scattering process, γγ→γγ , in ultraperipheral PbPb collisions at a centre-of-mass energy per nucleon pair of is reported. The analysis is conducted using a data sample corresponding to an integrated luminosity of 390 μb−1 recorded by the CMS experiment at the LHC. Light-by-light scattering processes are selected in events with two photons exclusively produced, each with transverse energy EγT>2GeV, ...Journal Article -
Studies of Beauty Suppression via Nonprompt D0 Mesons in Pb-Pb Collisions at √sNN=5.02 TeV
(2019)Physical Review LettersThe transverse momentum spectra of D0 mesons from b hadron decays are measured at midrapidity (|y|<1) in pp and Pb-Pb collisions at a nucleon-nucleon center of mass energy of 5.02 TeV with the CMS detector at the LHC. The D0 mesons from b hadron decays are distinguished from prompt D0 mesons by their decay topologies. In Pb-Pb collisions, the B→D0 yield is found to be suppressed in the measured pT range from 2 to 100 GeV/c as compared ...Journal Article