CHIRAL PERTURBATION-THEORY FOR B-]D-ASTERISK AND B-]D SEMILEPTONIC TRANSITION MATRIX-ELEMENTS AT ZERO RECOIL

被引:36
|
作者
RANDALL, L [1 ]
WISE, MB [1 ]
机构
[1] CALTECH,PASADENA,CA 91125
基金
美国国家科学基金会;
关键词
D O I
10.1016/0370-2693(93)90057-O
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Heavy quark symmetry predicts the value of B-->D and B-->D* transition matrix elements of the current cgamma(mu)BAR(1-gamma5)b, at zero recoil (where in the rest frame of the B the D or D* is also at rest). We use chiral perturbation theory to compute the leading corrections to these predictions which are generated at low momentum, below the chiral symmetry breaking scale.
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页码:135 / 139
页数:5
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