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Search for new physics in final states with a lepton and missing transverse energy in pp collisions at the LHC
(2013)Physical Review DThis Letter describes the search for an enhanced production rate of events with a charged lepton and a neutrino in high-energy pp collisions at the LHC. The analysis uses data collected with the CMS detector, with an integrated luminosity of 5.0 fb−1 at √s=7 TeV, and a further 3.7 fb−1 at √s=8 TeV. No evidence is found for an excess. The results are interpreted in terms of limits on a heavy charged gauge boson (W′) in the sequential ...Journal Article -
Search for Pair Production of Third-Generation Leptoquarks and Top Squarks in pp Collisions at √s=7 TeV
(2013)Physical Review LettersResults are presented from a search for the pair production of third-generation scalar and vector leptoquarks, as well as for top squarks in R-parity-violating supersymmetric models. In either scenario, the new, heavy particle decays into a τ lepton and a b quark. The search is based on a data sample of pp collisions at √s=7 TeV, which is collected by the CMS detector at the LHC and corresponds to an integrated luminosity of 4.8 fb−1. ...Journal Article -
Rapidity distributions in exclusive Z+jet and γ+jet events in pp collisions at √s=7 TeV
(2013)Physical Review DRapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at √s=7 TeV, correspond to an integrated luminosity of 5.0 fb−1. The individual rapidity distributions of the boson and the jet are consistent within 5% with expectations from perturbative QCD. However, QCD predictions for the sum and the ...Journal Article -
Observation of a diffractive contribution to dijet production in proton-proton collisions at √s=7 TeV
(2013)Physical Review DThe cross section for dijet production in proton-proton collisions at √s=7 TeV is presented as a function of ˜ξ, a variable that approximates the fractional momentum loss of the scattered proton in single-diffractive events. The analysis is based on an integrated luminosity of 2.7 nb−1 collected with the CMS detector at the LHC at low instantaneous luminosities, and uses events with jet transverse momentum of at least 20 GeV. The dijet ...Journal Article -
Measurement of the B0s→μ+μ− branching fraction and search for B0→μ+μ− with the CMS Experiment
(2013)Physical Review LettersResults are presented from a search for the rare decays Bs0→μ+μ- and B0→μ+μ - in pp collisions at √s=7 and 8 TeV, with data samples corresponding to integrated luminosities of 5 and 20 fb-1, respectively, collected by the CMS experiment at the LHC. An unbinned maximum-likelihood fit to the dimuon invariant mass distribution gives a branching fraction B(Bs0→μ+μ-)=(3.0-0.9+1.0) ×10-9, where the uncertainty includes both statistical and ...Journal Article -
Measurement of the elliptic anisotropy of charged particles produced in PbPb collisions at √sNN=2.76 TeV
(2013)Physical Review CThe anisotropy of the azimuthal distributions of charged particles produced in √sNN=2.76 TeV PbPb collisions is studied with the CMS experiment at the LHC. The elliptic anisotropy parameter, v2, defined as the second coefficient in a Fourier expansion of the particle invariant yields, is extracted using the event-plane method, two- and four-particle cumulants, and Lee-Yang zeros. The anisotropy is presented as a function of transverse ...Journal Article -
Interpretation of searches for supersymmetry with simplified models
(2013)Physical Review DJournal Article -
Search for supersymmetry in events with opposite-sign dileptons and missing transverse energy using an artificial neural network
(2013)Physical Review DJournal Article -
Measurement of neutral strange particle production in the underlying event in proton-proton collisions at √s=7 TeV
(2013)Physical Review DMeasurements are presented of the production of primary K0S and Λ particles in proton-proton collisions at √s=7 TeV in the region transverse to the leading charged-particle jet in each event. The average multiplicity and average scalar transverse momentum sum of K0S and Λ particles measured at pseudorapidities |η|<2 rise with increasing charged-particle jet pT in the range 1–10 GeV/c and saturate in the region 10–50 GeV/c. The rise and ...Journal Article -
Search for contact interactions using the inclusive jet pT spectrum in pp collisions at √s=7 TeV
(2013)Physical Review DResults are reported of a search for a deviation in the jet production cross section from the prediction of perturbative quantum chromodynamics at next-to-leading order. The search is conducted using a 7 TeV proton-proton data sample corresponding to an integrated luminosity of 5.0 fb−1, collected with the Compact Muon Solenoid detector at the Large Hadron Collider. A deviation could arise from interactions characterized by a mass scale ...Journal Article