HQET chromomagnetic interaction at two loops

被引：38

作者：

Czarnecki, A ^{[1
]}

Grozin, AG ^{[1
]}

机构：

[1] BUDKER INST NUCL PHYS,NOVOSIBIRSK 630090,RUSSIA

来源：

PHYSICS LETTERS B | 1997年 / 405卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(97)00587-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the coefficient of the chromomagnetic interaction operator, the only unknown coefficient in the Heavy Quark Effective Theory (HQET) lagrangian up to the 1/m level, with the two-loop accuracy by matching scattering amplitudes of an on-shell heavy quark in an external field in full QCD and HQET, and obtain the two-loop anomalous dimension of this operator in HQET. (C) 1997 Elsevier Science B.V.

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页码：142 / 149

页数：8

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