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

共 42 条

[1] Could the MSSM have no CP violation in the CKM matrix? [J].

Abel, SA ;

Frere, JM .

PHYSICAL REVIEW D, 1997, 55 (03) :1623-1629

[2]

ALEXANDER J, 1998, 29 INT C HIGH EN PHY

[3]

ALI A, HEPPH9903535

[4]

[Anonymous], 1989, CP VIOLATION

[5] SPONTANEOUS CP VIOLATION IN THE SUPERSYMMETRIC HIGGS SECTOR [J].

BABU, KS ;

BARR, SM .

PHYSICAL REVIEW D, 1994, 49 (05) :R2156-R2160

[6] Alternative theories of CP violation [J].

Barbieri, R ;

Hall, L ;

Stocchie, A ;

Weiner, N .

PHYSICS LETTERS B, 1998, 425 (1-2) :119-125

[7] CP RESTRICTIONS ON QUARK MASS MATRICES [J].

BERNABEU, J ;

BRANCO, GC ;

GRONAU, M .

PHYSICS LETTERS B, 1986, 169 (2-3) :243-247

[8]

BIGI II, 1993, PERSPECTIVES HIGGS P, P276

[9] Simple charged higgs model of soft or spontaneous CP violation without flavor changing neutral currents [J].

Bowser-Chao, D ;

Chang, D ;

Keung, WY .

PHYSICAL REVIEW LETTERS, 1998, 81 (10) :2028-2031

[10] THE HIGGS MASS IN A MODEL WITH 2 SCALAR DOUBLETS AND SPONTANEOUS CP VIOLATION [J].

BRANCO, GC ;

REBELO, MN .

PHYSICS LETTERS B, 1985, 160 (1-3) :117-120

← 1 2 3 4 5 →