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Search for top squark pair production in compressed-mass-spectrum scenarios in proton-proton collisions at √s = 8 TeV using the αT variable
(2017)Physics Letters BAn inclusive search is performed for supersymmetry in final states containing jets and an apparent imbalance in transverse momentum, p→Tmiss, due to the production of unobserved weakly interacting particles in pp collisions at a centre-of-mass energy of 8 TeV. The data, recorded with the CMS detector at the CERN LHC, correspond to an integrated luminosity of 18.5 fb−1. The dimensionless kinematic variable αTαT is used to discriminate ...Journal Article -
Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks
(2017)Physics Letters BA search for heavy resonances decaying to a Higgs boson and a vector boson is presented. The analysis is performed using data samples collected in 2015 by the CMS experiment at the LHC in proton–proton collisions at a center-of-mass energy of 13 TeV, corresponding to integrated luminosities of 2.2–2.5 fb−1. The search is performed in channels in which the vector boson decays into leptonic final states (Z→νν, W→ℓν, and Z→ℓℓ, with ℓ=e,μ), ...Journal Article -
Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC
(2017)Physics Letters BMeasurements of strange hadron (KS 0, Λ+Λ‾, and Ξ−+Ξ‾+) transverse momentum spectra in pp, pPb, and PbPb collisions are presented over a wide range of rapidity and event charged-particle multiplicity. The data were collected with the CMS detector at the CERN LHC in pp collisions at s=7TeV, pPb collisions at sNN=5.02TeV, and PbPb collisions at sNN=2.76TeV. The average transverse kinetic energy is found to increase with multiplicity, at a ...Journal Article -
A search for new phenomena in pp collisions at √s = 13 TeV in final states with missing transverse momentum and at least one jet using the αT variable
(2017)The European Physical Journal CA search for new phenomena is performed in final states containing one or more jets and an imbalance in transverse momentum in pp collisions at a centre-of-mass energy of 13TeV. The analysed data sample, recorded with the CMS detector at the CERN LHC, corresponds to an integrated luminosity of 2.3fb−1. Several kinematic variables are employed to suppress the dominant background, multijet production, as well as to discriminate between other ...Journal Article -
Measurement of the production cross section of the W boson in association with two b jets in pp collisions at √s = 8 TeV
(2017)The European Physical Journal CThe production cross section of a W boson in association with two b jets is measured using a sample of proton–proton collisions at √s=8TeV collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8fb-1. The W bosons are reconstructed via their leptonic decays, W→ℓν, where ℓ=μ or e. The fiducial region studied contains exactly one lepton with transverse momentum pℓT>30GeV and pseudorapidity ...Journal Article -
Search for supersymmetry in the all-hadronic final state using top quark tagging in pp collisions at s√=13 TeV
(2017)Physical Review DA search is presented for supersymmetry in all-hadronic events with missing transverse momentum and tagged top quarks. The data sample was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 2.3 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV. Search regions are defined using the properties of reconstructed jets, the multiplicity of bottom and top quark candidates, and an imbalance ...Journal Article -
Search for leptophobic Z′ bosons decaying into four-lepton final states in proton–proton collisions at √s=8TeV
(2017)Physics Letters BA search for heavy narrow resonances decaying into four-lepton final states has been performed using proton–proton collision data at √s=8TeV collected by the CMS experiment, corresponding to an integrated luminosity of 19.7fb-1. No excess of events over the standard model background expectation is observed. Upper limits for a benchmark model on the product of cross section and branching fraction for the production of these heavy narrow ...Journal Article -
Search for new phenomena with multiple charged leptons in proton–proton collisions at √s=13TeV
(2017)The European Physical Journal CResults are reported from a search for physics beyond the standard model in final states with at least three charged leptons, in any combination of electrons or muons. The data sample corresponds to an integrated luminosity of 2.3fb−1 of proton–proton collisions at s√=13TeV, recorded by the CMS experiment at the LHC in 2015. Two jets are required in each event, providing good sensitivity to strong production of gluinos and squarks. The ...Journal Article -
Measurement of the cross section for electroweak production of Zγ in association with two jets and constraints on anomalous quartic gauge couplings in proton–proton collisions at s√=8 TeV
(2017)Physics Letters BA measurement is presented of the cross section for the electroweak production of a Z boson and a photon in association with two jets in proton–proton collisions at √s = 8 TeV. The Z bosons are identified through their decays to electron or muon pairs. The measurement is based on data collected with the CMS detector corresponding to an integrated luminosity of 19.7 fb −1. The electroweak contribution has a significance of 3.0 standard ...Journal Article -
Measurement of the WZ production cross section in pp collisions at √s=13 TeV
(2017)Physics Letters BThe WZ production cross section in proton–proton collisions at s=13 TeV is measured with the CMS experiment at the LHC using a data sample corresponding to an integrated luminosity of 2.3 fb−1. The measurement is performed in the leptonic decay modes WZ→ℓνℓ′ℓ′, where ℓ,ℓ′=e,μ. The measured cross section for the range 60<mℓ′ℓ′<120 GeV is σ(pp→WZ)=39.9±3.2(stat) (syst)−3.1+2.9±0.4(theo)±1.3(lumi) pb, consistent with the standard model prediction.Journal Article