B → τν in two-Higgs doublet models with MFV

被引：9
|
作者：
Blankenburg, G. [1 ]
Isidori, G. [2 ]
机构：
[1] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy
[2] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
来源：
EUROPEAN PHYSICAL JOURNAL PLUS | 2012年 / 127卷 / 08期
关键词：
PHYSICS;
D O I：
10.1140/epjp/i2012-12085-y
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We analyse the B -> tau nu decay in a generic two-Higgs doublet model satisfying the MFV hypothesis. In particular, we analyse under which conditions B(B -> tau nu) can be substantially enhanced over its SM value, taking into account the constraints of K -> mu nu, B -> X-s gamma, and B-s -> mu(+)mu(-). We find that for large tan beta values and Peccei-Quinn symmetry breaking terms of O(1/tan beta) a sizable (similar to 50%) enhancement of B(B -> tau nu) is possible, even for m(H) similar to 1TeV.
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页数：8
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