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Production of leading charged particles and leading charged-particle jets at small transverse momenta pp collisions at √s = 8 TeV
(2015)Physical Review DThe per-event yield of the highest transverse momentum charged particle and charged-particle jet, integrated above a given pminT threshold starting at pminT=0.8 and 1 GeV, respectively, is studied in pp collisions at √s=8 TeV. The particles and the jets are measured in the pseudorapidity ranges |η|<2.4 and 1.9, respectively. The data are sensitive to the momentum scale at which parton densities saturate in the proton, to multiple partonic ...Journal Article -
Study of W boson production in pPb collisions at √sNN = 5.02 TeV
(2015)Physics Letters BThe first study of W boson production in pPb collisions is presented, for bosons decaying to a muon or electron, and a neutrino. The measurements are based on a data sample corresponding to an integrated luminosity of 34.6 nb−1 at a nucleon–nucleon centre-of-mass energy of √sNN = 5.02 TeV , collected by the CMS experiment. The W boson differential cross sections, lepton charge asymmetry, and forward–backward asymmetries are measured for ...Journal Article -
Measurement of the differential cross section for top quark pair production in pp collisions at √s = 8 TeV
(2015)The European Physical Journal CThe normalized differential cross section for top quark pair (tt¯) production is measured in pp collisions at a centre-of-mass energy of 8TeV at the CERN LHC using the CMS detector in data corresponding to an integrated luminosity of 19.7fb−1. The measurements are performed in the lepton+jets (e/μ +jets) and in the dilepton (e+e−, μ+μ−, and e±μ∓) decay channels. The tt¯ cross section is measured as a function of the kinematic properties ...Journal Article -
Angular coefficients of Z bosons produced in pp collisions at √s = 8 TeV and decaying to μ+μ− as a function of transverse momentum and rapidity
(2015)Physics Letters BMeasurements of the five most significant angular coefficients, A0 through A4, for Z bosons produced in pp collisions at s=8 TeV and decaying to μ+μ− are presented as a function of the transverse momentum and rapidity of the Z boson. The integrated luminosity of the dataset collected with the CMS detector at the LHC corresponds to 19.7fb−1. These measurements provide comprehensive information about the Z boson production mechanisms, and ...Journal Article -
Search for diphoton resonances in the mass range from 150 to 850 GeV in pp collisions at √s= 8 TeV
(2015)Physics Letters BResults are presented of a search for heavy particles decaying into two photons. The analysis is based on a 19.7fb−1 sample of proton–proton collisions at s=8TeV collected with the CMS detector at the CERN LHC. The diphoton mass spectrum from 150 to 850 GeV is used to search for an excess of events over the background. The search is extended to new resonances with natural widths of up to 10% of the mass value. No evidence for new particle ...Journal Article -
Search for a charged Higgs boson in pp collisions at √s =8 TeV
(2015)Journal of High Energy PhysicsA search for a charged Higgs boson is performed with a data sample corresponding to an integrated luminosity of 19.7 ± 0.5 fb−1 collected with the CMS detector in proton-proton collisions at s√=8,TeV. The charged Higgs boson is searched for in top quark decays for m H± < m t − m b, and in the direct production pp → t(b)H± for m H± > m t − m b. The H± → τ ± ν τ and H± → tb decay modes in the final states τ h+jets, μτ h, ℓ+jets, and ℓℓ’ (ℓ ...Journal Article -
Search for supersymmetry in the vector-boson fusion topology in proton-proton collisions at √s=8 TeV
(2015)Journal of High Energy PhysicsThe first search for supersymmetry in the vector-boson fusion topology is presented. The search targets final states with at least two leptons, large missing transverse momentum, and two jets with a large separation in rapidity. The data sample corresponds to an integrated luminosity of 19.7 fb−1 of proton-proton collisions at s√=8 TeV collected with the CMS detector at the CERN LHC. The observed dijet invariant mass spectrum is found to ...Journal Article -
Search for neutral MSSM Higgs bosons decaying into a pair of bottom quarks
(2015)Journal of High Energy PhysicsA search for neutral Higgs bosons decaying into a bb¯¯¯ quark pair and produced in association with at least one additional b quark is presented. This signature is sensitive to the Higgs sector of the minimal supersymmetric standard model (MSSM) with large values of the parameter tan β. The analysis is based on data from proton-proton collisions at a center-of-mass energy of 8 TeV collected with the CMS detector at the LHC, corresponding ...Journal Article -
Measurements of the Z Z production cross sections in the 2l2ν channel in proton–proton collisions at √s=7 and 8 TeV and combined constraints on triple gauge couplings
(2015)The European Physical Journal CMeasurements of the Z Z production cross sections in proton–proton collisions at center-of-mass energies of 7 and 8 TeV are presented. Candidate events for the leptonic decay mode ZZ→2l2ν, where l denotes an electron or a muon, are reconstructed and selected from data corresponding to an integrated luminosity of 5.1 (19.6)fb-1 at 7 (8) TeV collected with the CMS experiment. The measured cross sections, σ(pp→ZZ)=5.1+1.5−1.4(stat)+1.4−1.1 ...Journal Article -
Search for Lepton-Flavour-Violating Decays of the Higgs Boson
(2015)Physics Letters BThe first direct search for lepton-flavour-violating decays of the recently discovered Higgs boson (H) is described. The search is performed in the H→μτe and H→μτh channels, where τe and τh are tau leptons reconstructed in the electronic and hadronic decay channels, respectively. The data sample used in this search was collected in pp collisions at a centre-of-mass energy of s=8 TeV with the CMS experiment at the CERN LHC and corresponds ...Journal Article