Two-loop renormalization of heavy-light currents at order 1/mQ in the heavy-quark expansion

被引：5

作者：

Becher, T ^{[1
]}

Neubert, M ^{[1
]}

Petrov, AA ^{[1
]}

机构：

[1] Cornell Univ, Newman Lab Nucl Studies, Ithaca, NY 14853 USA

来源：

NUCLEAR PHYSICS B | 2001年 / 611卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0550-3213(01)00341-8

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present exact results, at next-to-leading order in renormalization-group improved perturbation theory in the heavy-quark expansion of heavylight, for the Wilson coefficients appearing at order 1/m(Q) light current operators. To this end, we complete the calculation of the corresponding two-loop anomalous dimension matrix. Our results are important for determinations Of /Yub/ using exclusive and inclusive semileptonic B decays. They are also relevant to computations of the decay constant f(B) based on a heavy-quark expansion. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：367 / 382

页数：16

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