QCD sum rules study of the semileptonic Bs(B±)(B0) → Ds[1968](D0)(D±)lv decays

被引：23
|
作者：
Azizi, K. [1 ]
机构：
[1] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey
来源：
NUCLEAR PHYSICS B | 2008年 / 801卷 / 1-2期
关键词：
D O I：
10.1016/j.nuclphysb.2008.04.011
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 of the semileptonic Bq -> D-q (J(P) = 0(-))lv with q =s, u,d transitions are calculated in the framework of three point QCD sum rules. Using the q(2) dependencies of the relevant form factors, the total decay width and the branching ratio for these decays are also evaluated. A comparison of our results for the form factors of B -> Dlv with the lattice QCD predictions within heavy quark effective theory and zero recoil limit is presented. Our results of the branching ratio are in good agreement with the constituent quark meson model for (q = s, u, d) and experiment for (q = u, d). The result of branching ratio for B-s -> D-s(1968)lv indicates that this transition can also be detected at LHC in the near future. (c) 2008 Elsevier B.V. All rights reserved.
引用
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页码：70 / 80
页数：11
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