2-LOOP RENORMALIZATION OF THE EFFECTIVE FIELD-THEORY OF A STATIC QUARK

被引：123

作者：

BROADHURST, DJ ^{[1
]}

GROZIN, AG ^{[1
]}

机构：

[1] NOVOSIBIRSK NUCL PHYS INST,NOVOSIBIRSK 630090,USSR

来源：

PHYSICS LETTERS B | 1991年 / 267卷 / 01期

关键词：

D O I：

10.1016/0370-2693(91)90532-U

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We give a recurrence relation for two-loop integrals encountered in the effective field theory of an infinitely heavy quark, Q, interacting with gluons and N(L) massless quarks, q, from which we obtain exact two-loop results, in any dimension and covariant gauge, for the propagator of Q and the vertex function of the heavy-light current J = QBAR-GAMMA-q, at zero q-momentum. The anomalous dimension of the Q-field agrees with the recent result of Broadhurst, Gray and Schilcher. The anomalous dimension of the current is [GRAPHICS] which gives the new two-loop correction to the result of Voloshin and Shifman.

引用

页码：105 / 110

页数：6

共 26 条

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