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Search for supersymmetry with Higgs boson to diphoton decays using the razor variables at root s=13 TeV
(2018)Physics Letters BAn inclusive search for anomalous Higgs boson production in the diphoton decay channel and in association with at least one jet is presented, using LHC proton–proton collision data collected by the CMS experiment at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 35.9 fb-1. The razor variables MR and R2, as well as the momentum and mass resolution of the diphoton system, are used to categorize events ...Journal Article -
Measurement of the Λb polarization and angular parameters in Λb→J/ψΛ decays from pp collisions at √s=7 and 8 TeV
(2018)Physical Review DAn analysis of the bottom baryon decay Λb→J/ψ(→μ+μ−)Λ(→pπ−) is performed to measure the Λb polarization and three angular parameters in data from pp collisions at √s=7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be 0.00±0.06(stat)±0.06(syst) and the parity-violating asymmetry parameter is determined to be 0.14±0.14(stat)±0.10(syst). The measurements are compared to various ...Journal Article -
Measurement of Prompt D0 Meson Azimuthal Anisotropy in Pb-Pb Collisions at √sNN=5.02 TeV
(2018)Physical Review LettersThe prompt D0 meson azimuthal anisotropy coefficients, v2 and v3, are measured at midrapidity (|y|<1.0) in Pb-Pb collisions at a center-of-mass energy √sNN=5.02 TeV per nucleon pair with data collected by the CMS experiment. The measurement is performed in the transverse momentum (pT) range of 1 to 40 GeV/c, for central and midcentral collisions. The v2 coefficient is found to be positive throughout the pT range studied. The first ...Journal Article -
Search for R-parity violating supersymmetry in pp collisions at √s=13TeV using b jets in a final state with a single lepton, many jets, and high sum of large-radius jet masses
(2018)Physics Letters BResults are reported from a search for physics beyond the standard model in proton–proton collisions at a center-of-mass energy of s=13TeV. The search uses a signature of a single lepton, large jet and bottom quark jet multiplicities, and high sum of large-radius jet masses, without any requirement on the missing transverse momentum in an event. The data sample corresponds to an integrated luminosity of 35.9 fb−1 recorded by the CMS ...Journal Article -
Measurement of charged particle spectra in minimum-bias events from proton–proton collisions at √s=13TeV
(2018)The European Physical Journal CPseudorapidity, transverse momentum, and multiplicity distributions are measured in the pseudorapidity range |η|<2.4 for charged particles with transverse momenta satisfying pT>0.5GeV in proton–proton collisions at a center-of-mass energy of s√=13TeV. Measurements are presented in three different event categories. The most inclusive of the categories corresponds to an inelastic p p data set, while the other two categories are exclusive ...Journal Article -
Search for physics beyond the standard model in high-mass diphoton events from proton-proton collisions at √s =13 TeV
(2018)Physical Review DA search for physics beyond the standard model is performed using a sample of high-mass diphoton events produced in proton-proton collisions at √s=13 TeV. The data sample was collected in 2016 with the CMS detector at the LHC and corresponds to an integrated luminosity of 35.9 fb−1. The search is performed for both resonant and nonresonant new physics signatures. At 95% confidence level, lower limits on the mass of the first Kaluza-Klein ...Journal Article -
Search for long-lived particles with displaced vertices in multijet events in proton-proton collisions at √s =13 TeV
(2018)Physical Review DResults are reported from a search for long-lived particles in proton-proton collisions at √s=13 TeV delivered by the CERN LHC and collected by the CMS experiment. The data sample, which was recorded during 2015 and 2016, corresponds to an integrated luminosity of 38.5 fb−1. This search uses benchmark signal models in which long-lived particles are pair-produced and each decays into two or more quarks, leading to a signal with multiple ...Journal Article -
Search for Narrow Resonances in the b-Tagged Dijet Mass Spectrum in Proton-Proton Collisions at √s =8 TeV
(2018)Physical Review LettersA search for narrow resonances decaying to bottom quark-antiquark pairs is presented, using a data sample of proton-proton collisions at √s=8 TeV corresponding to an integrated luminosity of 19.7 fb−1. The search is extended to masses lower than those reached in typical searches for resonances decaying into jet pairs at the LHC, by taking advantage of triggers that identify jets originating from bottom quarks. No significant excess of ...Journal Article -
Pseudorapidity and transverse momentum dependence of flow harmonics in p Pb and PbPb collisions
(2018)Physical Review CMeasurements of azimuthal angular correlations are presented for high-multiplicity pPb collisions at √sNN=5.02TeV and peripheral PbPb collisions at √sNN=2.76TeV. The data used in this work were collected with the Compact Muon Solenoid (CMS) detector at the European Organization for Nuclear Research (CERN) Large Hadron Collider (LHC). Fourier coefficients as functions of transverse momentum and pseudorapidity are studied using the scalar ...Journal Article -
Electroweak production of two jets in association with a Z boson in proton–proton collisions at √s= 13 TeV
(2018)The European Physical Journal CA measurement of the electroweak (EW) production of two jets in association with a Z boson in proton-proton collisions at s√=13TeV is presented, based on data recorded in 2016 by the CMS experiment at the LHC corresponding to an integrated luminosity of 35.9fb--1. The measurement is performed in the ℓℓjj final state with ℓ including electrons and muons, and the jets j corresponding to the quarks produced in the hard interaction. The ...Journal Article