A real CKM matrix and physics beyond the standard model

被引：11

作者：

Branco, GC ^{[1
]}

Cagarrinho, F ^{[1
]}

Krüger, F ^{[1
]}

机构：

[1] Univ Tecn Lisboa, Dept Fis, CFIF, Inst Super Tecn, P-1049001 Lisbon, Portugal

来源：

PHYSICS LETTERS B | 1999年 / 459卷 / 1-3期

关键词：

D O I：

10.1016/S0370-2693(99)00644-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the possible existence of a real Cabibbo-Kobayashi-Maskawa (CKM) matrix, with CP violation originating from physics beyond the standard model (SM). We show that present experimental data allow for a real CKM matrix provided that neu physics also contributes to Delta m(Bd) by at least 20% of the SM contribution (for rho > 0), besides generating CP violation in the kaon sector. The naturalness of a real CKM matrix is studied within the framework of general multi-Higgs-doublet models with spontaneous CP violation. As an example, we discuss a specific two-Higgs-doublet model and its implications for CP asymmetries in non-leptonic neutral B-meson decays. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：224 / 234

页数：11

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