Precision flavour physics and supersymmetry

被引：25

作者：

Ali, A

London, D

机构：

[1] DESY, D-2000 Hamburg, Germany

[2] Univ Montreal, Lab Rene JA Levsque, Montreal, PQ H3C 3J7, Canada

来源：

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS | 1999年 / 320卷 / 1-6期

关键词：

quark flavour mixing; CP violation; CKM matrix; unitarity-triangle; supersymmetry;

D O I：

10.1016/S0370-1573(99)00075-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We review the salient features of a comparative study of the profile of the CKM unitarity triangle, and the resulting CP-violating phases alpha, beta and gamma in B decays, in the standard model and in several variants of the minimal supersymmetric standard model (MSSM), reported recently by us. These theories are characterized by a single phase in the quark flavour mixing matrix and give rise to well-defined contributions in the flavour-changing-neutral-current transitions in K and B decays. We analyse the supersymmetric contributions to the mass differences in the B-d(O)-<(B-d(O))over bar> and B-s(O)-<(B-s(O))over bar> systems, Delta M-d and Delta M-s, respectively, and to the CP-violating :quantity /epsilon/ in K decays. Our analysis shows that the predicted ranges of beta in the standard model and in MSSM models are very similar. However, precise measurements at B-factories and hadron machines may be able to distinguish these theories in terms of the other two CP-violating phases alpha and gamma. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：79 / 106

页数：28

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