Bosonic corrections to Δr at the two-loop level -: art. no. 053004

被引：73
|
作者：
Awramik, M
Czakon, M
Onishchenko, A
Veretin, O
机构：
[1] Univ Karlsruhe, Inst Theoret Teilchenphys, D-76128 Karlsruhe, Germany
[2] Silesian Univ, Inst Phys, Dept Field Theory & Particle Phys, PL-40007 Katowice, Poland
[3] Univ Karlsruhe, Inst Theoret Phys, D-76128 Karlsruhe, Germany
[4] Protvino High Energy Phys Inst, State Res Ctr, Protvino 142284, Moscow Region, Russia
来源：
PHYSICAL REVIEW D | 2003年 / 68卷 / 05期
关键词：
D O I：
10.1103/PhysRevD.68.053004
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The details of two recent calculations of the two-loop bosonic corrections to the muon lifetime in the standard model are presented. The matching to the Fermi theory is discussed. Renormalization in the on-shell and the modified minimal subtraction schemes is studied and the transition between the schemes is shown to lead to identical results. High precision numerical methods are compared with the mass difference and large mass expansions.
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页数：21
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