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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 -
Measurement of the production cross section for Zγ→ννˉγ in pp collisions at √s= 7 TeV and limits on ZZγ and Zγγ triple gauge boson couplings
(2013)Journal of High Energy PhysicsA measurement of the Zγ→νν¯¯¯γ cross section in pp collisions at √s=7 TeV is presented, using data corresponding to an integrated luminosity of 5.0 fb−1 collected with the CMS detector. This measurement is based on the observation of events with an imbalance of transverse energy in excess of 130 GeV and a single photon in the absolute pseudorapidity range |η| < 1.4 with transverse energy above 145 GeV. The Zγ→νν¯¯¯γ production cross section ...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 -
Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC
(2013)Journal of High Energy PhysicsA search for the standard model Higgs boson produced in association with a top-quark pair is presented using data samples corresponding to an integrated luminosity of 5.0 fb−1 (5.1 fb−1) collected in pp collisions at the center-of-mass energy of 7 TeV (8 TeV). Events are considered where the top-quark pair decays to either one lepton+jets (tt¯→ℓνqq¯¯¯′bb¯¯¯) or dileptons (tt¯→ℓ+νℓ−ν¯¯¯bb¯¯¯), ℓ being an electron or a muon. The search is ...Journal Article -
Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at √s=7 TeV
(2013)Journal of High Energy PhysicsThe first measurement of the electroweak production cross section of a Z boson with two jets (Zjj) in pp collisions at s√=7 TeV is presented, based on a data sample recorded by the CMS experiment at the LHC with an integrated luminosity of 5 fb−1. The cross section is measured for the ℓℓjj (ℓ = e, μ) final state in the kinematic region m ℓℓ > 50 GeV, m jj > 120 GeV, transverse momenta pjT>25 GeV and pseudorapidity |η j| < 4.0. The ...Journal Article