THEORETICAL PREDICTION FOR D-ASTERISK-]D DECAYS

被引：22

作者：

ANGELOS, L

LEPAGE, GP

机构：

[1] Newman Laboratory of Nuclear Studies, Cornell University, Ithaca

来源：

PHYSICAL REVIEW D | 1992年 / 45卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.45.R3021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have predicted that B(D*+ --> D+gamma) is between 0.4% and 2% using data from the similar decays of D*0 and K* mesons. Our calculation is based on an effective field theory with expansions in external momentum and heavy-quark mass. We also have calculated the D*0 branching fractions and found reasonable agreement between theory and experiment. Our calculation suggests that nonleading terms in the quark-mass expansion may still be quite important for both s and c quarks.

引用

页码：R3021 / R3023

页数：3

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