Small-threshold behaviour of two-loop self-energy diagrams: Some special cases

被引：3

作者：

Berends, FA ^{[1
]}

Davydychev, AI ^{[1
]}

Smirnov, VA ^{[1
]}

机构：

[1] MOSCOW MV LOMONOSOV STATE UNIV,INST NUCL PHYS,MOSCOW 119899,RUSSIA

来源：

NUCLEAR PHYSICS B | 1996年

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1016/S0920-5632(96)90040-7

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：

An algorithm to construct analytic approximations to two-loop diagrams describing their behaviour at small non-aero thresholds is discussed. For some special cases (involving two different-scale mass parameters), several terms of the expansion are obtained.

引用

页码：301 / 306

页数：6

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