Probing quartic couplings of weak bosons through three vector production at a 500 GeV NLC
1992; Elsevier BV; Volume: 288; Issue: 1-2 Linguagem: Inglês
10.1016/0370-2693(92)91978-i
ISSN1873-2445
Autores Tópico(s)Black Holes and Theoretical Physics
ResumoWe write down a minimal set of genuine four-coupling operators between vector bosons with have no connection to the standard parametrisation of the trilinear anomalous W couplings. We impose a global weak SU(2) symmetry and, for those operators where photons are involved, a local U(1)QED. These requirement are strong enough to forbid or highly suppress any contribution to weak vector boson self-energies. Tests of these couplings are then only possible at high energies. We study the effects of these couplings at the NLC (500 GeV) in all possible three vectors boson productions: e+e−→W+W−Z, ZZZ, W+W−γ, ZZγ and Zγγ. We consider the possibility of having polarised beams and point out the usefulness of looking at particular distributions.
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