Two-loop anomalous dimensions of heavy baryon currents in heavy quark effective theory

被引：30

作者：

Groote, S ^{[1
]}

Korner, JG ^{[1
]}

Yakolev, OL ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW D | 1996年 / 54卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.54.3447

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results on the two-loop anomalous dimensions of the heavy baryon HQET currents J=(q(T)C Gamma tau q)Gamma'Q with arbitrary Dirac matrices Gamma and Gamma'. From our general result we obtain the two-loop anomalous dimensions for currents with quantum numbers of the ground state heavy baryons Lambda(Q), Sigma(Q), and Sigma(Q)*. As a by-product of our calculation and as an additional check we rederive the known two-loop anomalous dimensions of mesonic scalar pseudoscalar, vector, axial vector, and tensor currents (J=(q) over bar Gamma q) in massless QCD as well as in HQET.

引用

页码：3447 / 3456

页数：10

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