BOUND-STATE EFFECTS IN B-]K-ASTERISK-GAMMA

被引：19

作者：

CARLSON, CE ^{[1
]}

MILANA, J ^{[1
]}

机构：

[1] UNIV MARYLAND,DEPT PHYS,COLLEGE PK,MD 20742

来源：

PHYSICAL REVIEW D | 1995年 / 51卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.51.4950

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Applying perturbative QCD methods recently seen to give a good description of the two-body hadronic decays of the B meson, we address the question of bound-state effects on the decay B→K*γ. Consistent with most analyses, we demonstrate that gluonic penguin diagrams, with photonic bremsstrahlung off a quark, change the decay rate by only a few percent. Using an asymptotic distribution amplitude for the K* and just the standard model, we can obtain a branching ratio of a few ×10-5, consistent with the observed rate. © 1995 The American Physical Society.

引用

页码：4950 / 4954

页数：5

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