998 research outputs found

    Measurement of inclusive jet production and nuclear modifications in pPb collisions at root s(NN)=5.02 TeV

    Get PDF
    Peer reviewe

    Observation of top quark pairs produced in association with a vector boson in pp collisions at s=8 √s=8TeV

    Get PDF
    Measurements of the cross sections for top quark pairs produced in association with a W or Z boson are presented, using 8 TeV pp collision data corresponding to an integrated luminosity of 19.5 fb −1 , collected by the CMS experiment at the LHC. Final states are selected in which the associated W boson decays to a charged lepton and a neutrino or the Z boson decays to two charged leptons. Signal events are identified by matching reconstructed objects in the detector to specific final state particles from t t ¯ W tt¯W or t t ¯ Z tt¯Z decays. The t t ¯ W tt¯W cross section is measured to be 382 − 102 + 117 fb with a significance of 4.8 standard deviations from the background-only hypothesis. The t t ¯ Z tt¯Z cross section is measured to be 242 − 55 + 65 fb with a significance of 6.4 standard deviations from the background-only hypothesis. These measurements are used to set bounds on five anomalous dimension-six operators that would affect the t t ¯ W tt¯W and t t ¯ Z tt¯Z cross sections

    Combined search for anomalous pseudoscalar HW couplings in VH(H -> b(b)over-bar) production and H -> VV decay

    Get PDF
    Peer reviewe

    Search for dark matter particles in proton-proton collisions at √s=8 TeV using the razor variables

    Get PDF
    A search for dark matter particles directly produced in proton-proton collisions recorded by the CMS experiment at the LHC is presented. The data correspond to an integrated luminosity of 18.8 fb−1, at a center-of-mass energy of 8 TeV. The event selection requires at least two jets and no isolated leptons. The razor variables are used to quantify the transverse momentum balance in the jet momenta. The study is performed separately for events with and without jets originating from b quarks. The observed yields are consistent with the expected backgrounds and, depending on the nature of the production mechanism, dark matter production at the LHC is excluded at 90% confidence level for a mediator mass scale Λ below 1 TeV. The use of razor variables yields results that complement those previously published

    Angular analysis of the decay B-0 -> K*(0)mu(+)mu(-) from pp collisions at root s=8 TeV

    Get PDF
    Peer reviewe

    Coherent J/psi photoproduction in ultra-peripheral PbPb collisions at root s(NN)=2.76 TeV with the CMS experiment

    Get PDF
    Peer reviewe

    Search for supersymmetry in events with a photon, a lepton, and missing transverse momentum in pp collisions at root s=8 TeV

    Get PDF

    Measurement of dijet azimuthal decorrelation in pp collisions at root s=8 TeV

    Get PDF
    Peer reviewe

    Pseudorapidity dependence of long-range two-particle correlations in pPb collisions at root sNN=5.02 TeV

    Get PDF
    Peer reviewe

    Search for a charged Higgs boson in pp collisions at root s=8 TeV

    Get PDF
    Peer reviewe
    corecore