CP asymmetry for radiative B-meson decay in the supersymmetric standard model

被引：37

作者：

Aoki, M ^{[1
]}

Cho, GC

Oshimo, N

机构：

[1] Ochanomizu Univ, Grad Sch Humanities & Sci, Bunkyo Ku, Tokyo 1128610, Japan

[2] KEK, Theory Grp, Tsukuba, Ibaraki 3050801, Japan

[3] Univ Tokyo, Inst Cosm Ray Res, Tanashi, Tokyo 1888502, Japan

来源：

NUCLEAR PHYSICS B | 1999年 / 554卷 / 1-2期

关键词：

B meson; radiative decay; CP violation; supersymmetry;

D O I：

10.1016/S0550-3213(99)00305-3

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study a rate asymmetry in the inclusive decay B --> X(s)gamma, assuming the supersymmetric standard model based on N = 1 supergravity. A complex coefficient A for scalar-trilinear couplings is the source of CP violation, which is contained in the mass-squared matrices for squarks. The model parameters are non-trivially constrained by experimental results for the branching ratio of the radiative decay and for the electric dipole moments of the neutron and the electron. The decay rate asymmetry is predicted to be much larger than that by the standard model in a wide region of the parameter space compatible with the experiments. Its magnitude can be maximally around 0,1, which will be well accessible at B factories. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：50 / 66

页数：17

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