2-LOOP HEAVY TOP CORRECTIONS TO THE P-PARAMETER - A SIMPLE FORMULA VALID FOR ARBITRARY HIGGS MASS

被引：148

作者：

FLEISCHER, J ^{[1
]}

TARASOV, OV ^{[1
]}

JEGERLEHNER, F ^{[1
]}

机构：

[1] PAUL SCHERRER INST,CH-5232 VILLIGEN PSI,SWITZERLAND

来源：

PHYSICS LETTERS B | 1993年 / 319卷 / 1-3期

关键词：

D O I：

10.1016/0370-2693(93)90810-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a compact analytic result for the two-loop leading heavy top contribution to the rho-parameter which is valid for arbitrary Higgs mass. Our results confirm a recent calculation by Barbieri et al. [Phys. Lett. B 288 (1992) 95; preprint CERN-TH.6713/92 (1992)]. We directly calculate the physical W and Z amplitudes and explicitly check the validity of the Ward identities on which the calculation of Barbieri et al. was based. This also checks that the use of an anticommuting gamma5 PreServes the Ward identities. A corresponding formula for the ZbbBAR-vertex is given as well.

引用

页码：249 / 256

页数：8

共 29 条

[1] ELECTROWEAK ONE-LOOP CORRECTIONS TO THE DECAY OF THE NEUTRAL VECTOR BOSON [J].