New charged Higgs effects on ΓKe2/ΓKμ2, fDs and B(B+ → τ+ν) in the two-Higgs-doublet model

被引：14
作者：
Ahn, Y. H. [2 ]
Chen, Chuan-Hung [1 ,3 ]
机构：
[1] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan
[2] Acad Sinica, Inst Phys, Taipei 115, Taiwan
[3] Natl Ctr Theoret Sci, Hsinchu 300, Taiwan
来源：
PHYSICS LETTERS B | 2010年 / 690卷 / 01期
关键词：
FCNC; Two-Higgs-doublet model; Charged Higgs; Flavor physics; PHYSICS;
D O I：
10.1016/j.physletb.2010.05.008
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A new scheme for Yukawa matrices is proposed for free of flavor changing neutral currents (FCNCs) at tree level in general two-Higgs-doublet model (THDM) without imposing symmetry. We find that the new type couplings of charged Higgs to fermions not only depend on the flavors, but also can be ascribed by new CP violating phases. Unlike conventional THDM, the resulted new charged Higgs effects could have the specialties: (a) the influence on Gamma(K-e2(+/-))/Gamma(K-mu 2(+/-)) cannot be eliminated. (b) the decay constant of D-s could be enhanced, and (c) enhancement of branching ratio for B+ -> tau(+)nu could be achieved. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：57 / 61
页数：5
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