Non-factorizable corrections to W-pair production: Methods and analytic results

被引：55

作者：

Beenakker, W ^{[1
]}

Chapovsky, AP ^{[1
]}

Berends, FA ^{[1
]}

机构：

[1] CERN,DIV THEORY,CH-1211 GENEVA 23,SWITZERLAND

来源：

NUCLEAR PHYSICS B | 1997年 / 508卷 / 1-2期

关键词：

non-factorizable corrections; W-pair production; W-line shape; radiative corrections; four-fermion production; five-point scalar integral;

D O I：

10.1016/S0550-3213(97)00628-7

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

In this paper we present two methods to evaluate non-factorizable corrections to pair-production of unstable particles. The methods are illustrated in detail for W-pair-mediated four-fermion production. The results are valid a few widths above threshold, but not at threshold. One method uses the decomposition of n-point scalar functions for virtual and real photons, and can therefore be generalized to more complicated final states than four fermions. The other technique is an elaboration on a method known from the literature and serves as a useful check. Applications to other processes than W-pair production are briefly mentioned. (C) 1997 Elsevier Science B.V.

引用

页码：17 / 63

页数：47

共 21 条

[1] UNSTABLE PARTICLES IN ONE-LOOP CALCULATIONS [J].