Quartic anomalous couplings at LEP

Details Quartic anomalous couplings at LEP Quartic anomalous couplings at LEP

Publishing date

2001-05-14

URL

arxiv.org/abs/hep-ph/0105120v2

Journals

Phys.Lett. B515 (2001) 197-205

Science

Physics

Field

High Energy Physics

SubField

High Energy Physics - Phenomenology

Additional info

LaTeX, 12 pages, 5 figures. Minor changes, version to appear in Phys. Lett. B

Type

Scientific paper

Digital Object Identifier

10.1016/S0370-2693(01)00834-6

Abstract

The search for quartic anomalous gauge couplings at LEP requires appropriate predictions for the radiative processes e+ e- \to \nu\bar\nu \gamma\gamma, e+ e- \to q\bar{q}\gamma\gamma and e+ e- \to 4 fermions+\gamma. Matrix elements are exactly computed at the tree level, and the effects of anomalous couplings and initial-state radiation are included. Comparisons with results and approximations existing in the literature are shown and commented. Improved versions of the event generators NUNUGPV and WRAP are made available for experimental analysis.

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