Fermion mixing renormalization and gauge invariance

被引：60
|
作者：
Gambino, P [1 ]
Grassi, PA
Madricardo, F
机构：
[1] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
[2] Max Planck Inst Phys, Werner Heisenberg Inst, D-80805 Munich, Germany
来源：
PHYSICS LETTERS B | 1999年 / 454卷 / 1-2期
关键词：
D O I：
10.1016/S0370-2693(99)00321-4
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the renormalization of the fermion mixing matrix in the Standard Model and derive the constraints that must be satisfied to respect gauge invariance to all orders. We demonstrate that the prescription based on the on-shell renormalization conditions is not consistent with the Ward-Takahashi Identities and leads to gauge dependent physical amplitudes. A simple scheme is proposed that satisfies all theoretical requirements and is very convenient for practical calculations. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：98 / 104
页数：7
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