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Measurement of the sum of WW and WZ production with W+dijet events in pp collisions at √s = 7 TeV

  • Author(s): Chatrchyan, S
  • Khachatryan, V
  • Sirunyan, AM
  • Tumasyan, A
  • Adam, W
  • Aguilo, E
  • Bergauer, T
  • Dragicevic, M
  • Erö, J
  • Fabjan, C
  • Friedl, M
  • Frühwirth, R
  • Ghete, VM
  • Hammer, J
  • Hörmann, N
  • Hrubec, J
  • Jeitler, M
  • Kiesenhofer, W
  • Knünz, V
  • Krammer, M
  • Krätschmer, I
  • Liko, D
  • Mikulec, I
  • Pernicka, M
  • Rahbaran, B
  • Rohringer, C
  • Rohringer, H
  • Schöfbeck, R
  • Strauss, J
  • Taurok, A
  • Waltenberger, W
  • Walzel, G
  • Wulz, CE
  • Mossolov, V
  • Shumeiko, N
  • Suarez Gonzalez, J
  • Bansal, M
  • Bansal, S
  • Cornelis, T
  • De Wolf, EA
  • Janssen, X
  • Luyckx, S
  • Mucibello, L
  • Ochesanu, S
  • Roland, B
  • Rougny, R
  • Selvaggi, M
  • Van Haevermaet, H
  • Van Mechelen, P
  • Van Remortel, N
  • et al.

A measurement of the inclusive WW+WZ diboson production cross section in proton-proton collisions is reported, based on events containing a leptonically decaying W boson and exactly two jets. The data sample, collected at √s = 7 TeV with the CMS detector at the LHC, corresponds to an integrated luminosity of 5. 0 fb-1. The measured value of the sum of the inclusive WW and WZ cross sections is σ(pp→WW+WZ)=68. 9±8. 7 (stat.)±9. 7 (syst.)±1. 5 (lum.) pb, consistent with the standard model prediction of 65. 6±2. 2 pb. This is the first measurement of WW+WZ production in pp collisions using this signature. No evidence for anomalous triple gauge couplings is found and upper limits are set on their magnitudes. © 2013 CERN for the benefit of the CMS collaboration.

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