Now showing items 2344-2363 of 2617

    • Study of final-state radiation in decays of Z bosons produced in pp collisions at 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 (2015-05-29)
      The differential cross sections for the production of photons in Z→μ+μ-γ decays are presented as a function of the transverse energy of the photon and its separation from the nearest muon. The data for these measurements ...
    • Study of hadronic event-shape variables in multijet final states in pp collisions at √s = 7TeV 

      Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko (2014-10-14)
      Event-shape variables, which are sensitive to perturbative and nonperturbative aspects of quantum chromodynamic (QCD) interactions, are studied in multijet events recorded in proton-proton collisions at √s = 7 TeV. Events ...
    • Study of Jet Quenching with Z+jet Correlations in Pb-Pb and pp Collisions at s NN=5.02 TeV 

      Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Baarmand, M.M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Hohlmann, Marcus; Noonan, D.; Roy, Tuhin S.; Yumiceva, Francisco X. (2017-08-23)
      The production of jets in association with Z bosons, reconstructed via the μ+μ- and e+e- decay channels, is studied in pp and, for the first time, in Pb-Pb collisions. Both data samples were collected by the CMS experiment ...
    • Study of resonance formation in the mass region 1400- 1500 MeV through the reaction γγ→K0 SK±π ∓ 

      Archard, P.; Adriáni, Oscar S.; Aguilar-Benítez, M.; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S.; Szillási, Zolton; Vodopiyanov, Igor (2007-03-06)
      The K0 SK±π∓ final state in two-photon collisions is studied with the L3 detector at LEP at e+e- centre-of-mass energies from 183 to 209 GeV with an integrated luminosity of 664.6 pb-1. The η(1475) and f 1(1420) mesons are ...
    • Study of the dijet mass spectrum in pp→W+jets events at √s=7 TeV 

      Chatrchyan, S. A.; Sirunyan, A. M.; Khachatryan, V.; Tumasyan, A. R.; Wolfgang, Adam; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Vodopiyanov, Igor B. (2012-12-21)
      We report an investigation of the invariant mass spectrum of the two jets with highest transverse momentum in pp ! W þ 2-jet and W þ 3-jet events to look for resonant enhancement. The data sample corresponds to an ...
    • Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs 

      Chatrchyan, S.A.; Khachatryan, Vladimir A.; Sirunyan, A.M.; Tumasyan, A.R.; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor; Yumiceva, Francisco (2013-02-21)
      A study is presented of the mass and spin-parity of the new boson recently observed at the LHC at a mass near 125 GeV. An integrated luminosity of 17.3 fb-1, collected by the CMS experiment in proton-proton collisions at ...
    • Study of the solar anisotropy of cosmic ray primaries of about 200 GeV energy with the L3+C muon detector 

      Achard, P.; Adriáni, Oscar S.; Aguilar-Benítez, M.; van den Akker, Martin; Baksay, G.; Baksay, L.; Dehmelt, K.; Hohlmann, M.; Szillasi, Z.; Vodopianov, I. (2008-07-09)
      Context. Primary cosmic rays experience multiple deflections in the non-uniform galactic and heliospheric magnetic fields which may generate anisotropies. Aims. A study of anisotropies in the energy range between ...
    • Study of the underlying event at forward rapidity in pp collisions at √s = 0.9, 2.76, and 7 TeV 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor; Yumiceva, Francisco (2013-04-11)
      The underlying event activity in proton-proton collisions at forward pseudo-rapidity (−6.6 < η < −5.2) is studied with the CMS detector at the LHC, using a novel observable: the ratio of the forward energy density, dE/dη, ...
    • A study of thunderstorm microphysical properties and lightning flash counts associated with terrestrial gamma-ray flashes 

      Barnes, D. E.; Splitt, Michael E.; Dwyer, Joseph R.; Lazarus, Steven M.; Smith, David M.; Rassoul, Hamid K. (2015)
      The terrestrial gamma ray flash (TGF) is an emission of highly energetic radiation produced by or at least in close association with lightning. Previous investigations attempted to isolate the production mechanisms and ...
    • A study of thunderstorm microphysical properties and lightning flash counts associated with terrestrial gamma-ray flashes 

      Barnes, D. E; Splitt, Michael E.; Dwyer, Joseph R.; Lazarus, Steven M.; Smith, David M.; Rassoul, Hamid K. (2015)
      The terrestrial gamma ray flash (TGF) is an emission of highly energetic radiation produced by or at least in close association with lightning. Previous investigations attempted to isolate the production mechanisms and ...
    • Study of vector boson scattering and search for new physics in events with two same-sign leptons and two jets 

      Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Wolfgang, Adam; Bergauer, Thomas; Dragicevic, Marko; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X. (2015-02-02)
      A study of vector boson scattering in pp collisions at a center-of-mass energy of 8 TeV is presented. The data sample corresponds to an integrated luminosity of 19.4 fb−1 collected with the CMS detector. Candidate events ...
    • Study of W boson production in pPb collisions at √sNN=5.02TeV 

      Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2015-09-28)
      The first study of W boson production in pPb collisions is presented, for bosons decaying to a muon or electron, and a neutrino. The measurements are based on a data sample corresponding to an integrated luminosity of ...
    • A study of X-ray emissions from thunderstorms with emphasis on subsequent strokes in natural lightning 

      Mallick, Shreeharsh; Rakov, V.; Dwyer, Joseph R. (2012)
      X-ray emissions associated with leaders of natural cloud-to-ground lightning are examined. For 23 (8 first and 15 subsequent) strokes within 2 km of the Lightning Observatory in Gainesville, the occurrence of detectable ...
    • Study of Z boson production in PbPb collisions at √s <inf>NN</inf>=2.76TeV 

      Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Ralich, Robert M.; Vodopiyanov, Igor B.; Dorney, B.; Guragain, S. (2011-05-24)
      A search for Z bosons in the þ decay channel has been performed in PbPb collisions at ffiffiffiffiffiffiffiffi sNN p ¼ 2:76 TeV with the CMS detector at the LHC, in a 7:2 b 1 data sample. The number of opposite-sign muon ...
    • Study of Z boson production in pPb collisions at √sNN=5.02 TeV 

      Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Noonan, D.; Baarmand, M.M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Hohlmann, Marcus; Roy, Tuhin S.; Yumiceva, Francisco X. (2016-08-10)
      The production of Z bosons in pPb collisions at sNN=5.02 TeV is studied by the CMS experiment via the electron and muon decay channels. The inclusive cross section is compared to pp collision predictions, and found to scale ...
    • Study of Z production in PbPb and pp collisions at √sNN = 2.76 TeV in the dimuon and dielectron decay channels 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2015-03-04)
      The production of Z bosons is studied in the dimuon and dielectron decay channels in PbPb and pp collisions at √sNN = 2.76 TeV, using data collected by the CMS experiment at the LHC. The PbPb data sample corresponds to ...
    • Study protocol: Identifying and delivering point-of-care information to improve care coordination 

      Hysong, Sylvia J.; Che, Xinxuan; Weaver, Sallie J.; Petersen, Laura A. (2015-10-19)
      The need for deliberately coordinated care is noted by many national-level organizations. The Department of Veterans Affairs (VA) recently transitioned primary care clinics nationwide into Patient Aligned Care Teams (PACTs) ...
    • A Study To Develop An Electronics Chassis Compound Cylinder Pressure Vessel Using Finite Element Modeling 

      Straley, Gordon Randall (2016-12)
      This thesis develops a process to design and analyze a two-layer compound cylinder pressure vessel utilizing an inner insert to house electronic circuit card assemblies. The process begins with sizing and analysis of a ...
    • Studying the photometric and spectroscopic variability of the magnetic hot supergiant ζ Orionis Aa 

      Buysschaert, Bram; Neiner, Coralie; Richardson, Noel D.; Ramiaramanantsoa, Tahina; David-Uraz, Alexandre; Pablo, Herbert; Oksala, Mary E.; Moffat, Anthony F.J.; Mennickent, Ronald E.; Legeza, S. (2017-06)
      Massive stars play a significant role in the chemical and dynamical evolution of galaxies. However, much of their variability, particularly during their evolved supergiant stage, is poorly understood. To understand the ...
    • A sturm separation theorem for a linear 2nth order self-adjoint differential equatio 

      Fulton, Charles T.; Limin, Wu; Pruess, Steven (1995)
      For the 2nth order equation, (−1)nv(2n)+qv=0, with q continuous, we obtain a Sturm Separation theorem, involving n+1 solutions of the equation, which is somewhat analogous to the classical result that the zeros of two ...