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Measurement of the W +W - cross section in pp collisions at √s= 8 TeVand limits on anomalous gauge couplings

  • Author(s): Khachatryan, V
  • Sirunyan, AM
  • Tumasyan, A
  • Adam, W
  • Asilar, E
  • Bergauer, T
  • Brandstetter, J
  • Brondolin, E
  • Dragicevic, M
  • Erö, J
  • Flechl, M
  • Friedl, M
  • Frühwirth, R
  • Ghete, VM
  • Hartl, C
  • Hörmann, N
  • Hrubec, J
  • Jeitler, M
  • Knünz, V
  • König, A
  • Krammer, M
  • Krätschmer, I
  • Liko, D
  • Matsushita, T
  • Mikulec, I
  • Rabady, D
  • Rahbaran, B
  • Rohringer, H
  • Schieck, J
  • Schöfbeck, R
  • Strauss, J
  • Treberer-Treberspurg, W
  • Waltenberger, W
  • Wulz, CE
  • Mossolov, V
  • Shumeiko, N
  • Suarez Gonzalez, J
  • Alderweireldt, S
  • Cornelis, T
  • De Wolf, EA
  • Janssen, X
  • Knutsson, A
  • Lauwers, J
  • Luyckx, S
  • Ochesanu, S
  • Rougny, R
  • Van De Klundert, M
  • Van Haevermaet, H
  • Van Mechelen, P
  • Van Remortel, N
  • Van Spilbeeck, A
  • Abu Zeid, S
  • Blekman, F
  • D’Hondt, J
  • Daci, N
  • De Bruyn, I
  • Deroover, K
  • Heracleous, N
  • Keaveney, J
  • Lowette, S
  • Moreels, L
  • Olbrechts, A
  • Python, Q
  • Strom, D
  • Tavernier, S
  • Van Doninck, W
  • Van Mulders, P
  • Van Onsem, GP
  • Van Parijs, I
  • Barria, P
  • Caillol, C
  • Clerbaux, B
  • De Lentdecker, G
  • Delannoy, H
  • Fasanella, G
  • Favart, L
  • Gay, APR
  • Grebenyuk, A
  • Lenzi, T
  • Léonard, A
  • Maerschalk, T
  • Marinov, A
  • Perniè, L
  • Randle-conde, A
  • Reis, T
  • Seva, T
  • Vander Velde, C
  • Vanlaer, P
  • Yonamine, R
  • Zenoni, F
  • Zhang, F
  • Beernaert, K
  • Benucci, L
  • Cimmino, A
  • Crucy, S
  • Dobur, D
  • Fagot, A
  • Garcia, G
  • Gul, M
  • Mccartin, J
  • et al.
Abstract

© 2016, CERN for the benefit of the CMS collaboration. A measurement of the W boson pair production cross section in proton-proton collisions at √s = 8 TeV is presented. The data collected with the CMS detector at the LHC correspond to an integrated luminosity of 19.4fb-1. The W +W - candidates are selected from events with two charged leptons, electrons or muons, and large missing transverse energy. The measured W +W - cross section is 60.1 ± 0.9 (stat) ± 3.2 (exp) ± 3.1 (theo) ± 1.6 (lumi) pb = 60.1±4.8 pb, consistent with the standard model prediction. The W +W - cross sections are also measured in two different fiducial phase space regions. The normalized differential cross section is measured as a function of kinematic variables of the final-state charged leptons and compared with several perturbative QCD predictions. Limits on anomalous gauge couplings associated with dimension-six operators are also given in the framework of an effective field theory. The corresponding 95 % confidence level intervals are -5.7

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