OPERATOR PRODUCT EXPANSION IN STATIC-QUARK EFFECTIVE FIELD-THEORY - LARGE PERTURBATIVE CORRECTION

被引：102

作者：

BROADHURST, DJ ^{[1
]}

GROZIN, AG ^{[1
]}

机构：

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

来源：

PHYSICS LETTERS B | 1992年 / 274卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(92)92009-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the coefficients of operators with dimensions d less-than-or-equal-to 7 in the operator product expansion of correlators of q-GAMMA-QBAR currents, for the effective field theory of an infinite-mass quark, Q. Exact two-loop results are obtained, with an arbitrary gauge group and spacetime dimension, for the perturbative (d = 0) and quark-condensate (d = 3) contributions, confirming our previous result for the anomalous dimension of the current. Leading-order results are given for light-quark operators with d = 5, 6, 7 and gluon operators with d = 4,6. The existence of a perturbative correction of order 100% precludes a reliable determination of f(B) from non-relativistic sum rules.

引用

页码：421 / 427

页数：7

共 49 条

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