SOLUTIONS TO THE B-MESON SEMILEPTONIC BRANCHING RATIO PUZZLE WITHIN 2-HIGGS-DOUBLET MODELS

被引：52

作者：

GRZADKOWSKI, B

HOU, WS

机构：

[1] MAX PLANCK INST PHYS & ASTROPHYS,WERNER HEISENBERG INST PHYS,W-8000 MUNICH 40,GERMANY

[2] UNIV WARSAW,INST THEORET PHYS,PL-00681 WARSAW,POLAND

[3] PAUL SCHERRER INST,CH-5232 VILLIGEN,SWITZERLAND

来源：

PHYSICS LETTERS B | 1991年 / 272卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(91)91847-O

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent experimental values for BR(B --> l-nu-(l)XBAR) seem low compared to spectator model expectations. Conventional explanations have to be stretched considerably to accommodate this, pointing towards the possibility of new physics explanations. In the two-Higgs-doublet models, the b --> c-tau-nu-tauBAR mode or the b --> sg mode could get enhanced to the (10-20)% level, thereby suppressing BR(B --> l-nu-(l)XBAR) to the experimental value. The experimental consequences of these scenarios are discussed.

引用

页码：383 / 390

页数：8

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