Semi-leptonic decays of heavy mesons and the Isgur-Wise function in quenched lattice QCD

被引：21
|
作者：
Bowler, KC [1 ]
Douglas, G [1 ]
Kenway, RD [1 ]
Lacagnina, GN [1 ]
Maynard, CM [1 ]
机构：
[1] Univ Edinburgh, Dept Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland
来源：
NUCLEAR PHYSICS B | 2002年 / 637卷 / 1-3期
关键词：
D O I：
10.1016/S0550-3213(02)00462-5
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：
The form factors for the semi-leptonic B --> D and B --> D* decays are evaluated in quenched lattice QCD at two different values of the coupling, beta = 6.0 and 6.2. The action and the operators are fully O(a) non-perturbatively improved. The slope of the Isgur-Wise function is evaluated, and found to be rho(2) = 0.83(-11-22)(+15+24) (quoted errors are statistical and systematic, respectively). Ratios of form factors are evaluated and compared to experimental determinations. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：293 / 310
页数：18
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