STUDY OF CHARMLESS B-MESON SEMILEPTONIC DECAYS IN AN INCLUSIVE MODEL

被引：11

作者：

ARTUSO, M

机构：

[1] Department of Physics, Syracuse University, Syracuse

来源：

PHYSICS LETTERS B | 1993年 / 311卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(93)90574-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A precision measurement of V(ub) will be achieved only when the hadronic matrix element needed to describe the b --> u semileptonic decays is modeled in a reliable fashion. In this letter predictions for kinematical variables which are very sensitive to the underlying hadronic dynamics are developed in an inclusive parton model. Particular emphasis will be given to the end-point of the lepton spectrum, which is of crucial importance for the interpretation of present experimental data. It will be shown that this approach gives a value of \V(ub)/V(cb)\2 which can be up to 35% higher than the one quoted in recent reports and in better agreement with previous measurements of excess leptons from charmless B meson semileptonic decays.

引用

页码：307 / 310

页数：4

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