SEMILEPTONIC-B DECAYS INTO CHARMED P-WAVE MESONS AND THE HEAVY-QUARK SYMMETRY

被引：71

作者：

COLANGELO, P

NARDULLI, G

PAVER, N

机构：

[1] UNIV BARI, DIPARTIMENTO FIS, I-70126 BARI, ITALY

[2] UNIV TRIESTE, DIPARTIMENTO FIS TEOR, I-34014 TRIESTE, ITALY

[3] IST NAZL FIS NUCL, SEZ TRIESTE, TRIESTE, ITALY

来源：

PHYSICS LETTERS B | 1992年 / 293卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(92)91503-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In the framework of QCD sum rules we evaluate the B meson semileptonic transitions to positive-parity charmed states. We consider the limit of infinitely heavy quarks and determine the two universal Isgur-Wise functions. We also compare this description with the results obtained for finite values of heavy-quark masses. The computed branching ratios for these decays are of the order of 10(-3).

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收藏

页码：207 / 215

页数：9

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