Search
Results
-
Search for a heavy bottom-like quark in pp collisions at root s=7 TeV
(2011)Physics Letters BJournal Article -
Search for physics beyond the standard model using multilepton signatures in pp collisions at root s=7 TeV
(2011)Physics Letters BA search for physics beyond the standard model in events with at least three leptons and any number of jets is presented. The data sample corresponds to 35 pb−1 of integrated luminosity in pp collisions at s=7TeV collected by the CMS experiment at the LHC. A number of exclusive multileptonic channels are investigated and standard model backgrounds are suppressed by requiring sufficient missing transverse energy, invariant mass ...Journal Article -
Measurement of the differential dijet production cross section in proton–proton collisions at root s=7 TeV
(2011)Physics Letters BA measurement of the double-differential inclusive dijet production cross section in proton-proton collisions at √s=7 TeV is presented as a function of the dijet invariant mass and jet rapidity. The data correspond to an integrated luminosity of 36 pb-1, recorded with the CMS detector at the LHC. The measurement covers the dijet mass range 0.2 TeV to 3.5 TeV and jet rapidities up to |y|=2.5. It is found to be in good agreement with ...Journal Article -
Measurement of the Polarization of W Bosons with Large Transverse Momenta in W plus jets Events at the LHC
(2011)Physical Review LettersA first measurement of the polarization of W bosons with large transverse momenta in pp collisions is presented. The measurement is based on 36 pb−1 of data recorded at √s=7 TeV by the CMS detector at the LHC. The left-handed, right-handed, and longitudinal polarization fractions (fL, fR, and f0, respectively) of W bosons with transverse momenta larger than 50 GeV are determined by using decays to both electrons and muons. The muon final ...Journal Article -
Search for Three-Jet Resonances in pp Collisions at √s=7 TeVV
(2011)Physical Review LettersA search for three-jet hadronic resonance production in pp collisions at a center-of-mass energy of 7 TeV has been conducted by the CMS Collaboration at the LHC, using a data sample corresponding to an integrated luminosity of 35 pb−1. Events with high jet multiplicity and a large scalar sum of jet transverse momenta are analyzed using a signature-based approach. The number of expected standard model background events is found to be in ...Journal Article -
First measurement of the cross section for top-quark pair production in proton-proton collisions at √s=7 TeV
(2011)Physics Letters BThe first measurement of the cross section for top-quark pair production in pp collisions at the Large Hadron Collider at center-of-mass energy s=7 TeV has been performed using a data sample corresponding to an integrated luminosity of 3.1±0.3 pb-1 recorded by the CMS detector. This result utilizes the final state with two isolated, highly energetic charged leptons, large missing transverse energy, and two or more jets. Backgrounds from ...Journal Article -
Search for resonances in the dijet mass spectrum from 7 TeV pp collisions at CMS
(2011)Physics Letters BA search for narrow resonances with a mass of at least 1 TeV in the dijet mass spectrum is performed using pp collisions at s=7TeV corresponding to an integrated luminosity of 1 fb-1, collected by the CMS experiment at the LHC. No resonances are observed. Upper limits at the 95% confidence level are presented on the product of the resonance cross section, branching fraction into dijets, and acceptance, separately for decays into quark-quark, ...Journal Article -
Search for supersymmetry in pp collisions at 7 TeV in events with jets and missing transverse energy
(2011)Physics Letters BA search for supersymmetry with R-parity conservation in proton–proton collisions at a centre-of-mass energy of 7 TeV is presented. The data correspond to an integrated luminosity of 35 pb−1 collected by the CMS experiment at the LHC. The search is performed in events with jets and significant missing transverse energy, characteristic of the decays of heavy, pair-produced squarks and gluinos. The primary background, from standard model ...Journal Article -
Measurement of Wγ and Zγ production in pp collisions at root s=7 TeV
(2011)Physics Letters BA measurement of W γ and Z γ production in proton-proton collisions at s=7 TeV is presented. Results are based on a data sample recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36 pb-1. The electron and muon decay channels of the W and Z are used. The total cross sections are measured for photon transverse energy ETγ>10 GeV and spatial separation from charged leptons in the plane of pseudorapidity ...Journal Article -
First measurement of hadronic event shapes in pp collisions at √s=7 TeV
(2011)Physics Letters BHadronic event shapes have been measured in proton–proton collisions at s=7 TeV, with a data sample collected with the CMS detector at the LHC. The sample corresponds to an integrated luminosity of 3.2 pb−1. Event-shape distributions, corrected for detector response, are compared with five models of QCD multijet production.Journal Article