Now showing items 1-20 of 168

    • Angular coefficients of Z bosons produced in pp collisions at √s=8 TeV and decaying to μ+μ- as a function of transverse momentum and rapidity 

      Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2015-11-15)
      Measurements of the five most significant angular coefficients, A0 through A4, for Z bosons produced in pp collisions at √s=8 TeV and decaying to μ+μ- are presented as a function of the transverse momentum and rapidity of ...
    • Comparison of the Z/γ ∗ + jets to γ + jets cross sections in pp collisions at √s = 8 TeV 

      Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Bhopatkar, Vardan; Hohlmann, Marcus; Kalakhety, Himali; Mareskas-palcek, Darren; Roy, Tuhin S.; Yumiceva, Francisco (2015-10-20)
      A comparison of the differential cross sections for the processes Z/γ * + jets and photon (γ)+jets is presented. The measurements are based on data collected with the CMS detector at √s = 8 TeV corresponding to an integrated ...
    • Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs 

      Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2014-09-07)
      Constraints are presented on the total width of the recently discovered Higgs boson, ΓH, using its relative on-shell and off-shell production and decay rates to a pair of Z bosons, where one Z boson decays to an electron ...
    • Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV 

      Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.; Adam, Wolfgang; Bergauer, Thomas; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco; Adams, M.R. (2015-07-13)
      The study of the spin-parity and tensor structure of the interactions of the recently discovered Higgs boson is performed using the H to ZZ, Z gamma*, gamma* gamma* to 4 l, H to WW to l nu l nu, and H to gamma gamma decay ...
    • Determination of the top-quark pole mass and strong coupling constant from the tt̄ production cross section in pp collisions at √s = 7 TeV 

      Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang (2014-01-20)
      The inclusive cross section for top-quark pair production measured by the CMS experiment in proton-proton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order ...
    • Differential cross section measurements for the production of a W boson in association with jets in proton-proton collisions at √s = 7 TeV 

      Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko (2014-12-05)
      Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse ...
    • Erratum to: Comparison of the Z/γ* + jets to γ + jets cross sections in pp collisions at √s = 8 (JHEP, (2015), 10, 128) 

      Khachatryan, Vallary; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Bhopatkarv, Vallary; Hohlmann, Marcus; Kalakhety, Himali; Mareskas-palcek, Darren; Roy, Tuhin S.; Yumiceva, Francisco (2016-04-04)
      An error was found in the published version in the top right plots in figure 2 and figure 3. In both cases the normalization of the photon plots is incorrect by the factor of the luminosity of 19.7. The corrected figures ...
    • Erratum to: Search for new physics in events with same-sign dileptons and jets in pp collisions at √s = 8 TeV 

      Chatrchyan, S.A.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2015-01-07)
      Erratum to: JHEP01(2014)163. The online version of the original article can be found at http://dx.doi.org/10.1007/JHEP01(2014)16
    • Event activity dependence of Υ(nS) production in √SNN = 5.02 TeV pPb and √s = 2.76 TeV pp collisions 

      Chatrchyan, S.A.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2014-04-15)
      The production of Y (1S), Y (2S), and Y (3S) is investigated in pPb and pp collisions at centre-of-mass energies per nucleon pair of 5.02 TeV and 2.76 TeV, respectively. The datasets correspond to integrated luminosities ...
    • Event activity dependence of υ(nS) production in √SNN = 5.02 TeV pPb and √s = 2.76 TeV pp collisions 

      Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Chatrchyan, S. A.; Khachatryan, Vladimir A.; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang (2014-04-15)
      The production of υ(1S), υ(2S), and υ(3S) is investigated in pPb and pp collisions at centre-of-mass energies per nucleon pair of 5.02 TeV and 2.76 TeV, respectively. The datasets correspond to integrated luminosities of ...
    • Evidence for the 125 gev higgs boson decaying to a pair of τ leptons 

      Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X. (2014-05)
      A search for a standard model Higgs boson decaying into a pair of τ leptons is performed using events recorded by the CMS experiment at the LHC in 2011 and 2012. The dataset corresponds to an integrated luminosity of 4.9 ...
    • Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons 

      Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Bergauer, Thomas (2014-05)
      A search for a standard model Higgs boson decaying into a pair of τ leptons is performed using events recorded by the CMS experiment at the LHC in 2011 and 2012. The dataset corresponds to an integrated luminosity of 4.9 ...
    • Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2014-05-22)
      A search for a standard model Higgs boson decaying into a pair of τ leptons is performed using events recorded by the CMS experiment at the LHC in 2011 and 2012. The dataset corresponds to an integrated luminosity of 4.9 ...
    • Evidence for transverse-momentum- and pseudorapidity-dependent event-plane fluctuations in PbPb and p Pb collisions 

      Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Bhopatkar, Vallary; Hohlmann, Marcus; Kalakhety, H.; Mareskas-Palcek, D.; Roy, Tuhin S.; Yumiceva, Francisco X. (2015-09-22)
      A systematic study of the factorization of long-range azimuthal two-particle correlations into a product of single-particle anisotropies is presented as a function of pT and η of both particles and as a function of the ...
    • Exclusive γγ → +μμ - production in proton-proton collisions at √s = 7 TeV 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor (2012-01-11)
      A measurement of the exclusive two-photon production of muon pairs in proton-proton collisions at √s = 7 TeV, pp → pμ+μ−p, is reported using data corresponding to an integrated luminosity of 40 pb−1. For muon pairs with ...
    • Identification techniques for highly boosted W bosons that decay into hadrons 

      Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; The CMS Collaboration; Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Bergauer, Thomas (2014-12-02)
      In searches for new physics in the energy regime of the LHC, it is becoming increasingly important to distinguish single-jet objects that originate from the merging of the decay products of W bosons produced with high ...
    • Identification techniques for highly boosted W bosons that decay into hadrons 

      Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2014-12-02)
      In searches for new physics in the energy regime of the LHC, it is becoming increasingly important to distinguish single-jet objects that originate from the merging of the decay products of W bosons produced with high ...
    • Inclusive b-jet production in pp collisions at √s = 7 TeV 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor (2012-04-17)
      The 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 ...
    • Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at √s=8 TeV 

      Chatrchyan, S.A.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2014-02-05)
      A search is performed for a massive new vector-like quark T, with charge 2 3 , that is pair produced together with its antiparticle in proton–proton collisions. The data were collected by the CMS experiment at the Large ...
    • J/ψ and ψ (2S) production in pp collisions at √s = 7 TeV 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor (2012-02-07)
      A measurement of the J/ψ and ψ(2S) production cross sections in pp collisions at √s = 7TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 pb−1. Using a fit ...