Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2010-02-03
Eur. Phys. J. C66 (2010) 35-56
Physics
High Energy Physics
High Energy Physics - Experiment
38 pages, 12 figures, Accepted by Eur. Phys. J. C
Scientific paper
10.1140/epjc/s10052-010-1254-1
The data taken by DELPHI at centre-of-mass energies between 189 and 209 GeV are used to place limits on the CP-conserving trilinear gauge boson couplings Delta_g1z, lambda_gamma and Delta_kappag associated to W+W- and single W production at LEP2. Using data from the jjlv, jjjj, jjX and lX final states, where j, l and X represent a jet, a lepton and missing four-momentum, respectively, the following limits are set on the couplings when one parameter is allowed to vary and the others are set to their Standard Model values of zero: Delta_g1z = -0.025^{+0.033}_{-0.030}, lambda_gamma = 0.002^{+0.035}_{-0.035} and Delta_kappag = 0.024^{+0.077}_{-0.081} . Results are also presented when two or three parameters are allowed to vary. All observations are consistent with the predictions of the Standard Model and supersede the previous results on these gauge coupling parameters published by DELPHI.
Abdallah Joseph
The DELPHI Collaboration
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