Measurements of CP-conserving trilinear gauge boson couplings WWV (V = gamma,Z) in e+e- collisions at LEP2

0370332 - FZÚ 2012 RIV DE eng J - Journal Article
Abdallah, J. - Abreu, A. - Adam, W. - Mašík, Jiří - Němeček, Stanislav - Řídký, Jan - Todorovová, Šárka - Trávníček, Petr - Vrba, Václav … Total 344 authors
Measurements of CP-conserving trilinear gauge boson couplings WWV (V = gamma,Z) in e+e- collisions at LEP2.
European Physical Journal C. Roč. 66, 1-2 (2010), s. 35-56. ISSN 1434-6044. E-ISSN 1434-6052
R&D Projects: GA MŠMT LA08015; GA MŠMT LA08032
Institutional research plan: CEZ:AV0Z10100502
Keywords : electron positron: annihilation * W: pair production * gauge boson: coupling * coupling: (3gauge boson) * coupling: (W+ W- Z0) * DELPHI * LEP
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 3.248, year: 2010
http://arxiv.org/pdf/arXiv:1002.0752

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.
Permanent Link: http://hdl.handle.net/11104/0204167