CP asymmetries of (B)over-bar → Xs/Xdγ in models with three Higgs doublets

被引：13
作者：
Akeroyd, A. G. [1 ]
Moretti, Stefano [1 ]
Shindou, Tetsuo [2 ]
Song, Muyuan [1 ]
机构：
[1] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England
[2] Kogakuin Univ, Div Liberal Arts, 2665-1 Nakano Machi, Hachioji, Tokyo 1920015, Japan
来源：
PHYSICAL REVIEW D | 2021年 / 103卷 / 01期
基金：
欧盟地平线“2020”;
关键词：
VIOLATION; SIGNATURES; PHASES; DECAY;
D O I：
10.1103/PhysRevD.103.015035
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Direct CP asymmetries (A(CP)) in the inclusive decays of (B) over bar -> X-s gamma and (B) over bar -> Xs+d gamma of the order of 1% will be probed at the BELLE II experiment. In this work, three such asymmetries are studied in the context of a three-Higgs-doublet model (3HDM), and it is shown that all three A c p can be as large as the current experimental limits. Of particular interest is the A(CP) for (B) over bar -> Xs+d gamma, which is predicted to be effectively zero in the Standard Model (SM). A measurement of 2.5% or more for this observable with the full BELLE II data would give 5 sigma evidence for physics beyond the SM. We display parameter space in the 3HDM for which such a clear signal is possible.
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页数：14
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