QCD CORRECTIONS TO CHARGED HIGGS-MEDIATED B-]C-TAU-NU DECAY

被引：55
|
作者：
GROSSMAN, Y
HABER, HE
NIR, Y
机构：
[1] CERN,DIV TH,CH-1211 GENEVA 23,SWITZERLAND
[2] UNIV CALIF SANTA CRUZ,INST PARTICLE PHYS,SANTA CRUZ,CA 95064
来源：
PHYSICS LETTERS B | 1995年 / 357卷 / 04期
关键词：
D O I：
10.1016/0370-2693(95)00946-I
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We calculate the O(alpha(s)) corrections to the charged Higgs mediated inclusive semi-tauonic B decay. By working in the Landau gauge, we demonstrate how to obtain the charged Higgs contributions (both direct and interference terms) from the known QCD corrections to t --> bH(+). Combining our results with O(1/m(b)(2)) corrections to the spectator model and comparing the theoretical prediction with the recent experimental measurements, we find a model-independent 2 sigma upper bound on the ratio of Higgs vacuum expectation values, tan beta < 0.52 (m(H)/1 GeV).
引用
收藏
页码：630 / 636
页数：7
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