CP violation in the top-quark system through light squarks

被引：8

作者：

Aoki, M

Oshimo, N

机构：

[1] Ochanomizu Univ, Grad Sch Humanities & Sci, Bunkyo Ku, Tokyo 112, Japan

[2] Univ Tokyo, Inst Cosm Ray Res, Tanashi, Tokyo 188, Japan

来源：

NUCLEAR PHYSICS B | 1998年 / 531卷 / 1-3期

关键词：

CP violation; supersymmetry; top quark; EDMs;

D O I：

10.1016/S0550-3213(98)00428-3

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 decay rate asymmetry of the top quark in the supersymmetric standard model, taking into account the constraints from the electric dipole moments of the neutron and the electron. One CP-violating phase contained in the mass-squared matrices of squarks and sleptons is allowed to have an unsuppressed value, even if their masses are of order 100 GeV, Sizable CP violation could then occur in the production and decay of the top quark through interactions with top squarks. The asymmetry between the widths for the decays t --> bW(+) and (t) over tilde --> (b) over bar W- can be of order 10(-3), which will possibly be detectable in the near future. (C) 1998 Elsevier Science B.V.

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页码：49 / 64

页数：16

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