Global analysis of inclusive B decays -: art. no. 094017

被引：147

作者：

Bauer, CW ^{[1
]}

Ligeti, Z

Luke, M

Manohar, AV

Trott, M

机构：

[1] CALTECH, Pasadena, CA 91125 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[3] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

[4] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW D | 2004年 / 70卷 / 09期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1103/PhysRevD.70.094017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In light of the large amount of new experimental data, we revisit the determination of |V-cb| and m(b) from inclusive semileptonic and radiative B decays. We study shape variables to order Lambda(QCD)(3)/m(b)(3) and alpha(s)(2)beta(0), and include the order alpha(s)Lambda(QCD)/m(b) correction to the hadron mass spectrum in semileptonic decay, which improves the agreement with the data. We focus on the 1S and kinetic mass schemes for the b quark, with and without expanding m(b)-m(c) in heavy quark effective theory. We perform fits to all available data from BABAR, BELLE, CDF, CLEO, and DELPHI, discuss the theoretical uncertainties, and compare with earlier results. We find |V-cb|=(41.4+/-0.6+/-0.1(tauB))x10(-3) and m(b)(1S)=4.68+/-0.03 GeV, including our estimate of the theoretical uncertainty in the fit.

引用

页数：12

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