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Measurement of the production cross section for pairs of isolated photons in pp collisions at √s=7TeV
(2012)Journal of High Energy PhysicsThe integrated and differential cross sections for the production of pairs of isolated photons is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 36 pb−1 is analysed. A next-to-leading-order perturbative QCD calculation is compared to the measurements. A discrepancy is observed for regions of the phase space where the two ...Journal Article -
Search for a W′ or Techni-ρ Decaying into WZ in pp Collisions at √s=7 TeV
(2012)Physical Review LettersA search is performed in pp collisions at √s=7 TeV for exotic particles decaying via WZ to final states with electrons and muons. The data sample corresponds to an integrated luminosity of approximately 5 fb−1. No significant excess is observed in the data above the expected standard model background. Upper bounds at 95% confidence level are set on the production cross section of the W′ boson described by the sequential standard model ...Journal Article -
Search for the standard model Higgs boson in the H -> ZZ -> 2l2v channel in pp collisions at √s=7 TeV
(2012)Journal of High Energy PhysicsJournal Article -
Measurement of the tt¯ production cross section in the dilepton channel in pp collisions at √s=7 TeV
(2012)Journal of High Energy PhysicsThe tt¯ production cross section (σtt¯) is measured in proton-proton collisions at s√=7 TeV in data collected by the CMS experiment, corresponding to an integrated luminosity of 2.3 fb−1. The measurement is performed in events with two leptons (electrons or muons) in the final state, at least two jets identified as jets originating from b quarks, and the presence of an imbalance in transverse momentum. The measured value of σtt¯ for a ...Journal Article -
Measurement of jet fragmentation into charged particles in pp and PbPb collisions at √sNN=2.76 TeV
(2012)Journal of High Energy PhysicsJet fragmentation in pp and PbPb collisions at a centre-of-mass energy of 2.76 TeV per nucleon pair was studied using data collected with the CMS detector at the LHC. Fragmentation functions are constructed using charged-particle tracks with transverse momenta p T > 4 GeV/c for dijet events with a leading jet of p T > 100 GeV/c. The fragmentation functions in PbPb events are compared to those in pp data as a function of collision centrality, ...Journal Article -
Measurement of the inclusive production cross sections for forward jets and for dijet events with one forward and one central jet in pp collisions at sqrt(s) = 7 TeV
(2012)Journal of High Energy PhysicsJournal Article -
Search for heavy bottom-like quarks in 4.9 fb(-1) of pp collisions at root s=7 TeV
(2012)Journal of High Energy PhysicsJournal Article -
Search for a fermiophobic Higgs boson in pp collisions at √s =7 TeV
(2012)Journal of High Energy PhysicsCombined results are reported from searches for a fermiophobic Higgs boson in the γγ, WW, and ZZ decay modes in proton-proton collisions at s√=7 TeV. The explored Higgs boson mass range is 110–300 GeV. The data sample corresponds to an integrated luminosity of 4.9–5.1 fb−1. A fermiophobic Higgs boson is excluded at 95% confidence level in the mass range 110–194 GeV, and at 99% confidence level in the mass ranges 110–124.5 GeV, 127–147.5 ...Journal Article -
Measurement of the cross section for production of bb¯¯X decaying to muons in pp collisions at √s=7 TeV
(2012)Journal of High Energy PhysicsA measurement of the inclusive cross section for the process pp → bb¯¯¯X → μμX′ at s√=7 TeV is presented, based on a data sample corresponding to an integrated luminosity of 27.9 pb−1 collected by the CMS experiment at the LHC. By selecting pairs of muons each with pseudorapidity |η| < 2.1, the value σ(pp → bb¯¯¯X → μμX′) = 26.4 ± 0.1 (stat.) ±2.4 (syst.) ±1.1 (lumi.) nb is obtained for muons with transverse momentum p T > 4 GeV, and 5.12 ...Journal Article -
Inclusive b-jet production in pp collisions at √s=7TeV
(2012)Journal of High Energy PhysicsThe inclusive b-jet production cross section in pp collisions at a center-of mass energy of 7 TeV is measured using data collected by the CMS experiment at the LHC. The cross section is presented as a function of the jet transverse momentum in the range 18 < p T < 200 GeV for several rapidity intervals. The results are also given as the ratio of the b-jet production cross section to the inclusive jet production cross section. The measurement ...Journal Article