gB*Bπ-coupling in the static heavy quark limit

被引：49

作者：

Becirevic, Damir ^{[1
]}

Blossier, Benoit ^{[1
]}

Chang, Emmanuel ^{[1
]}

Haas, Benjamin ^{[1
]}

机构：

[1] Univ Paris Sud, Ctr Orsay, Phys Theor Lab, F-91405 Orsay, France

来源：

PHYSICS LETTERS B | 2009年 / 679卷 / 03期

关键词：

D O I：

10.1016/j.physletb.2009.07.031

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

By means of QCD simulations oil the lattice, we compute the coupling of the heavy-light mesons to a soft pion in the static heavy quark limit. The gauge field Configurations used in this calculations include the effect of N-f = 2 dynamical Wilson quarks, while for the static quark propagator We use its improved form (so-called HYP). On the basis of our results we obtain that the coupling (g) over cap = 0.44 +/- 0.03(-0.00)(+0.07), where the second error is flat (not Gaussian). (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：231 / 236

页数：6

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