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.

引用

页数：14

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