Pole Mass, Width, and Propagators of Unstable Fermions

Pole Mass, Width, and Propagators of Unstable Fermions
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不稳定费米子的极质量、宽度和传播者

DOI:
10.1103/physrevd.77.116012
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发表时间:
2008
期刊:
影响因子:
5
通讯作者:
A. Sirlin
A. Sirlin
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
B. Kniehl;A. Sirlin

文献摘要

被引文献

相似文献

在宇称非守恒规范理论(如标准模型)的一般框架中,极点质量和宽度的概念被推广到不稳定的费米子。与传统的壳层上定义相比,这些概念是规范无关的,避免了严重的非物理奇异性,这些性质非常重要,因为自然界中大多数基本费米子都是不稳定的粒子。给出了非稳定费米子的非重整化和重整化缀饰传播子及其场重整化常数的一般表达式。
The concepts of pole mass and width are extended to unstable fermions in the general framework of parity-nonconserving gauge theories, such as the standard model. In contrast with the conventional on-shell definitions, these concepts are gauge independent and avoid severe unphysical singularities, properties of great importance since most fundamental fermions in nature are unstable particles. General expressions for the unrenormalized and renormalized dressed propagators of unstable fermions and their field-renormalization constants are presented.