Measurement of inclusive W and Z boson production cross sections in pp collisions at sqrt[s] = 8 TeV

. 2014 May 16 ; 112 (19) : 191802. [epub] 20140514

Jazyk angličtina Země Spojené státy americké Médium print-electronic

Typ dokumentu časopisecké články, práce podpořená grantem, Research Support, U.S. Gov't, Non-P.H.S.

Perzistentní odkaz   https://www.medvik.cz/link/pmid24877930

A measurement of total and fiducial inclusive W and Z boson production cross sections in pp collisions at sqrt[s] = 8 TeV is presented. Electron and muon final states are analyzed in a data sample collected with the CMS detector corresponding to an integrated luminosity of 18.2 ± 0.5 pb(-1). The measured total inclusive cross sections times branching fractions are σ(pp → WX)×B(W → ℓν) = 12.21 ± 0.03(stat) ± 0.24(syst) ± 0.32(lum) nb and σ(pp → ZX) × B(Z → ℓ+ℓ-) = 1.15 ± 0.01(stat) ± 0.02(syst) ± 0.03(lum) nb for the dilepton mass in the range of 60-120 GeV. The measured values agree with next-to-next-to-leading-order QCD cross section calculations. Ratios of cross sections are reported with a precision of 2%. This is the first measurement of inclusive W and Z boson production in proton-proton collisions at sqrt[s] = 8 TeV.

Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt

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Bhabha Atomic Research Centre Mumbai India

Bogazici University Istanbul Turkey

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California Institute of Technology Pasadena USA

Carnegie Mellon University Pittsburgh USA

Centre de Calcul de l'Institut National de Physique Nucleaire et de Physique des Particules CNRS IN2P3 Villeurbanne France

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Centro de Investigacion y de Estudios Avanzados del IPN Mexico City Mexico

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CERN European Organization for Nuclear Research Geneva Switzerland

Charles University Prague Czech Republic

Chonnam National University Institute for Universe and Elementary Particles Kwangju Korea

Chulalongkorn University Bangkok Thailand

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Cukurova University Adana Turkey

Department of Physics University of Helsinki Helsinki Finland

Deutsches Elektronen Synchrotron Hamburg Germany

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