Probing nonstandard bosonic interactions via W-boson pair production at lepton colliders

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dc.creatorHagiwara, K.
dc.creatorHatsukano, T.
dc.creatorIshihara, S.
dc.creatorSzalapski, R.
dc.date1996-12-05
dc.date.accessioned2026-07-07T12:03:19Z
dc.date.available2026-07-07T12:03:19Z
dc.descriptionThe process e+e- --> W+W- provides a valuable laboratory to test the Standard Model (SM) and to search for new physics. The most general helicity amplitudes for this process require the introduction of nine form-factors which we calculate in the context of SU(2) X U(1) gauge-invariant extensions of the SM. The contributions of new physics are parametrized via an effective Lagrangian constructed from the light fields. Because the mechanism of electroweak symmetry-breaking remains an open problem we consider both the effective Lagrangian with a linearly realized Higgs sector, i.e. with a light physical Higgs boson, and the effective Lagrangian which utilizes a nonlinear realization of the Higgs mechanism. The use of an effective Lagrangian allows one to calculate consistently nonstandard contributions to e+e- --> W+W- amplitudes as well as the nonstandard contributions to other processes. We study the interplay of the low-energy and Z-pole measurements with measurements via the processes e+e- --> fermion pairs and e+e- --> W+W- at LEP II or a future linear e+e- collider. Concrete relationships between operators of the linear and nonlinear realizations are presented where possible.
dc.description\documentstyle[aps,floats,psfig,subeqn,rotate,eqsecnum]{revtex} postscript version also available from ftp://ftp.kek.jp/kek/preprints/TH/TH-497
dc.identifierhttps://arxiv.org/abs/hep-ph/9612268
dc.identifierhttp://arxiv.org/abs/hep-ph/9612268
dc.identifierNucl.Phys.B496:66-102,1997
dc.identifierdoi:10.1016/S0550-3213(97)00208-3
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207744
dc.subjectHigh Energy Physics - Phenomenology
dc.titleProbing nonstandard bosonic interactions via W-boson pair production at lepton colliders
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