Note on the extraction Of |Vub| using radiative B decays

被引：29

作者：

Neubert, M ^{[1
]}

机构：

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

来源：

PHYSICS LETTERS B | 2001年 / 513卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(01)00668-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The element \V-ub\ es by combining weighted integrals over the endpoint regions of the lepton spectrum in B --> X(u)lv, decays and the photon spectrum in B --> X(s)gamma decays. The perturbative corrections to this determination are computed at next-to-leading order including operator mixing, which has an important impact. The effect of Sudakov resummation is shown to be numerically insignificant. (C) 2001 Elsevier Science B.V. All rights reserved.

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页码：88 / 92

页数：5

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