Electroweak Radiative Corrections to Resonant Charged Gauge Boson Production

Details Electroweak Radiative Corrections to Resonant Charged Gauge Boson Production Electroweak Radiative Corrections to Resonant Charged Gauge Boson Production

1996-06-20

arxiv.org/abs/hep-ph/9606398v2

Phys.Rev.D55:6788-6818,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1103/PhysRevD.55.6788

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.

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