paper

Electroweak Radiative Corrections to Resonant Charged Gauge Boson Production

arXiv:hep-ph/9606398 · doi:10.1103/PhysRevD.55.6788

Abstract

The electroweak O(alpha) contribution to the resonant single W production in a general 4-fermion process is discussed with particular emphasis on a gauge invariant decomposition into a QED-like and weak part. The cross section in the vicinity of the resonance can be represented in terms of a convolution of a `hard' Breit-Wigner-cross section, comprising the (m_t,M_H)-dependent weak 1-loop corrections, with an universal radiator function. The numerical impact of the various contributions on the W line shape are discussed, together with the concepts of s-dependent and constant width approach. Analytic formulae for the W decay width are also provided including the 1-loop electroweak and QCD corrections.

arXiv comment49 pages, LaTeX source and 17 postscript figures, revised version with few minor changes, accepted for publication in Phys.Rev.D

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