QCD SUM-RULES IN THE EFFECTIVE HEAVY QUARK THEORY

被引：218
作者：
BAGAN, E
BALL, P
BRAUN, VM
DOSCH, HG
机构：
[1] Institut für Theoretische Physik, Universität Heidelberg, W-6900 Heidelberg
来源：
PHYSICS LETTERS B | 1992年 / 278卷 / 04期
关键词：
D O I：
10.1016/0370-2693(92)90585-R
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We derive sum rules for the leptonic decay constant of a heavy-light meson in the effective heavy quark theory. We show that the summation of logarithms in the heavy quark mass by the renormalization group technique enhances considerably radiative corrections. Our result for the decay constant in the static limit agrees well with recent lattice calculations. Finite quark mass corrections are estimated.
引用
收藏
页码：457 / 464
页数：8
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