OMICRON(G(MU)(2)M(T)(4)) ELECTROWEAK RADIATIVE-CORRECTIONS TO THE ZB(B)OVER-BAR VERTEX

被引：13

作者：

DENNER, A

HOLLIK, W

LAMPE, B

机构：

[1] UNIV BIELEFELD, FAK PHYS, D-33501 BIELEFELD, GERMANY

[2] MAX PLANCK INST PHYS & ASTROPHYS, D-80805 MUNICH, GERMANY

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1993年 / 60卷 / 01期

关键词：

D O I：

10.1007/BF01650447

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：

The leading heavy-top two-loop corrections to the ZbbBAR vertex are determined from a direct evaluation of the corresponding Feynman diagrams in the large m(t) limit. The leading one-loop top-mass effect is enhanced by [1 + G(mu)m(t)2(9-pi2/3)/(8pi2 square-root 2)]. Our calculation confirms a recent result of Barbieri et al..

引用

收藏

页码：193 / 198

页数：6

相关论文

共 15 条

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

AKHUNDOV, AA ;

BARDIN, DY ;

RIEMANN, T .

NUCLEAR PHYSICS B, 1986, 276 (01) :1-13

[2] RADIATIVE CORRECTION EFFECTS OF A VERY HEAVY TOP [J].

BARBIERI, R ;

BECCARIA, M ;

CIAFALONI, P ;

CURCI, G ;

VICERE, A .

PHYSICS LETTERS B, 1992, 288 (1-2) :95-98

[3]

BARBIERI R, CERNTH671392

[4] THE WIDTH OF THE Z-BOSON [J].

BEENAKKER, W ;

HOLLIK, W .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1988, 40 (01) :141-148

[5] TOP QUARK MASS FROM RADIATIVE-CORRECTIONS TO THE Z-]BBBAR DECAY [J].

BERNABEU, J ;

PICH, A ;

SANTAMARIA, A .

NUCLEAR PHYSICS B, 1991, 363 (2-3) :326-344

[6]

BERNABEU J, 1988, PHYS LETT B, V200, P141

[7] QCD CORRECTIONS TO THE (S)OVER-BAR-DZ VERTEX FOR ARBITRARY TOP-QUARK MASS [J].

BUCHALLA, G ;

BURAS, AJ .

NUCLEAR PHYSICS B, 1993, 398 (02) :285-300

[8] WEAK INTERACTIONS OF ULTRA HEAVY FERMIONS [J].

CHANOWITZ, MS ;

FURMAN, MA ;

HINCHLIFFE, I .

PHYSICS LETTERS B, 1978, 78 (2-3) :285-289

[9]

CONSOLI M, 1989, CERN REPORT, P7

[10] THE EFFECT OF THE TOP QUARK ON THE MW-MZ INTERDEPENDENCE AND POSSIBLE DECOUPLING OF HEAVY FERMIONS FROM LOW-ENERGY PHYSICS [J].

CONSOLI, M ;

HOLLIK, W ;

JEGERLEHNER, F .

PHYSICS LETTERS B, 1989, 227 (01) :167-170