Width difference in the Bs0-(B)over-bar-s0 system from lattice HQET

被引：6

作者：

Giménez, V

Reyes, J

机构：

[1] IFIC, Dept Fis Teor, E-46100 Burjassot, Valencia, Spain

[2] Univ Valencia, E-46100 Burjassot, Valencia, Spain

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2001年 / 93卷

关键词：

D O I：

10.1016/S0920-5632(00)01068-9

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 recent results for the prediction of the B-s(0)-(B) over bar (0)(s) lifetime difference from lattice Heavy Quark Effective Theory simulations. In order to get a next-to-leading order result we have calculated the matching between QCD and HQET and the two loop anomalous dimension in the HQET for all the DeltaB = 2 operators, in particular for the operators which enter in the width difference. me obtain far the B-s(0)-(B) over bar (0)(s) lifetime difference, Delta GammaB(s)/GammaB(s) = (5.1 +/- 1.9 +/- 1.7) x 10(-2).

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页码：95 / 98

页数：4

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