Now showing items 1-20 of 43

    • Charged particle multiplicities in pp interactions at √s = 0.9, 2.36, and 7 TeV 

      Khachatryan, S.; Sirunyan, A.M.; Tumasyan, A.R.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, Himali; Ralich, Robert M.; Vodopiyanov, Igor (2011-01-19)
      Measurements of primary charged hadron multiplicity distributions are presented for non-single-diffractive events in proton-proton collisions at centre-of-mass energies of √s = 0.9, 2.36, and 7 TeV, in five pseudorapidity ...
    • Charged particle transverse momentum spectra in pp collisions at √s = 0:9 and 7 TeV 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, Himali; Ralich, Robert M.; Vodopiyanov, Igor (2011-08-19)
      The charged particle transverse momentum (pT) spectra are presented for pp collisions at √s = 0.9 and 7 TeV. The data samples were collected with the CMS detector at the LHC and correspond to integrated luminosities of ...
    • Dijet azimuthal decorrelations in pp collisions at √s=7TeV 

      Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B. (2011-03-22)
      Measurements of dijet azimuthal decorrelations in pp collisions at √s=7TeV using the CMS detector at the CERN LHC are presented. The analysis is based on an inclusive dijet event sample corresponding to an integrated ...
    • First measurement of Bose-Einstein correlations in proton-proton collisions at √s=0.9 and 2.36 TeV at the LHC 

      Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Baarmand, Marc M.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, H.; Mermerkaya, H.; Ralich, Robert M.; Vodopiyanov, Igor (2010-07-13)
      Bose-Einstein correlations have been measured using samples of proton-proton collisions at 0.9 and 2.36 TeV center-of-mass energies, recorded by the CMS experiment at the CERN Large Hadron Collider. The signal is observed ...
    • Inclusive b-hadron production cross section with muons in pp collisions at √s = 7 TeV 

      Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, Himali; Ralich, Robert M.; Vodopiyanov, Igor (2011-03-18)
      A measurement of the b-hadron production cross section in proton-proton collisions at √s = 7TeV is presented. The dataset, corresponding to 85 nb−1, was recorded with the CMS experiment at the LHC using a low-threshold ...
    • Indications of suppression of excited? States in Pb-Pb collisions at sNN2.76 TeV 

      Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B. (2011-07-28)
      A comparison of the relative yields of resonances in the þ decay channel in Pb-Pb and pp collisions at a center-of-mass energy per nucleon pair of 2.76 TeV is performed with data collected with the CMS detector at ...
    • Long-range and short-range dihadron angular correlations in central PbPb collisions at psNN = 2:76 TeV 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, Himali; Ralich, Robert M.; Vodopiyanov, Igor (2011-07-18)
      First measurements of dihadron correlations for charged particles are presented for central PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV over a broad range in relative pseudorapidity (∆η) and the ...
    • Measurement of BB̄ angular correlations based on secondary vertex reconstruction at √s = 7 TeV 

      Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, Himali; Ralich, Robert M.; Vodopiyanov, Igor (2011-03-28)
      A measurement of the angular correlations between beauty and anti-beauty hadrons (BB¯) produced in pp collisions at a centre-of-mass energy of 7 TeV at the CERN LHC is presented, probing for the first time the region of ...
    • Measurement of dijet angular distributions and search for quark compositeness in pp collisions at √s=7TeV 

      Khachatryan, Vardan; Sirunyan, A. M.; Bergauer, Thomas; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B.; Dorney, B.; Guragain, S. (2011-05-18)
      Dijet angular distributions are measured over a wide range of dijet invariant masses in pp collisions at ffiffi s p ¼ 7 TeV, at the CERN LHC. The event sample, recorded with the CMS detector, corresponds to an integrated ...
    • Measurement of the B+ production cross section in pp collisions at √s=7TeV 

      Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B. (2011-03-17)
      Measurements of the total and differential cross sections dσ/dpTB and dσ/dyB for B+ mesons produced in pp collisions at √s=7TeV are presented. The data correspond to an integrated luminosity of 5.8pb-1 collected by the CMS ...
    • Measurement of the B0 production cross section in pp collisions at √s=7TeV 

      Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B. (2011-06-20)
      Measurements of the differential production cross sections d =dpB T and d =dyB for B0 mesons produced in pp collisions at ffiffi s p ¼ 7 TeV are presented. The data set used was collected by the CMS experiment at the ...
    • Measurement of the B<sup>+</sup> production cross section in pp collisions at √s=7TeV 

      Khachatryan, Vardan Vardan; Sirunyan, A. M.; Bergauer, Thomas; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B.; Dorney, B.; Guragain, S. (2011-03-17)
      Measurements of the total and differential cross sections d =dpB T and d =dyB for Bþ mesons produced in pp collisions at ffiffi s p ¼ 7 TeV are presented. The data correspond to an integrated luminosity of 5:8 pb 1 ...
    • Measurement of the Bs0 production cross section with Bs0→J/ψ Decays in pp collisions at √s=7TeV 

      Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, Himali; Ralich, Robert M.; Vodopiyanov, Igor; Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M. (2011-09-20)
      The Bs0 differential production cross section is measured as functions of the transverse momentum and rapidity in pp collisions at √s=7TeV, using the Bs0→J/ψ decay, and compared with predictions based on perturbative QCD ...
    • Measurement of the charge ratio of atmospheric muons with the CMS detector 

      Baarmand, Marc M.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, H.; Mermerkaya, H.; Ralich, Robert M.; Vodopiyanov, Igor; Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R. (2010-08)
      We present a measurement of the ratio of positive to negative muon fluxes from cosmic ray interactions in the atmosphere, using data collected by the CMS detector both at ground level and in the underground experimental ...
    • Measurement of the inclusive jet cross section in pp collisions at √s=7TeV 

      Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B. (2011-09-19)
      The inclusive jet cross section is measured in pp collisions with a center-of-mass energy of 7 TeV at the Large Hadron Collider using the CMS experiment. The data sample corresponds to an integrated luminosity of 34 pb ...
    • Measurement of the isolated prompt photons production cross section in pp collisions at √s=7TeV 

      Khachatryan, Vardan; Sirunyan, A. M.; Bergauer, Thomas; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B.; Dorney, B.; Guragain, S. (2011-02-23)
      The differential cross section for the inclusive production of isolated prompt photons has been measured as a function of the photon transverse energy E T in pp collisions at ffiffi s p ¼ 7 TeV using data recorded by ...
    • Measurement of the isolated prompt photons production cross section in pp collisions at √s=7TeV 

      Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B. (2011-02-23)
      The differential cross section for the inclusive production of isolated prompt photons has been measured as a function of the photon transverse energy ETγ in pp collisions at √s=7TeV using data recorded by the CMS detector ...
    • Measurement of the lepton charge asymmetry in inclusive W production in pp collisions at √s = 7 TeV 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, Himali; Ralich, Robert M.; Vodopiyanov, Igor (2011-04-12)
      A measurement of the lepton charge asymmetry in inclusive pp → WX production at √s = 7 TeV is presented based on data recorded by the CMS detector at the LHC and corresponding to an integrated luminosity of 36 pb−1. This ...
    • Measurement of the polarization of w bosons with large transverse momenta in W+jets events at the LHC 

      Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B. (2011-07-06)
      A 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 ffiffi s p ¼ 7 TeV by the CMS detector at the LHC. ...
    • Measurement of the t-channel single top quark production cross section in pp collisions at √s=7TeV 

      Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Baarmand, Marc M.; Dorney, B.; Guragain, Samir; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B. (2011-08-25)
      Electroweak production of the top quark is measured for the first time in pp collisions at ffiffi s p ¼ 7 TeV, using a data set collected with the CMS detector at the LHC and corresponding to an integrated luminosity of ...