String-derived D4 flavor symmetry and phenomenological implications

被引：92

作者：

Ko, Pyungwon ^{[1
]}

Kobayashi, Tatsuo

Park, Jae-Hyeon

Raby, Stuart

机构：

[1] KIAS, Sch Phys, Seoul 130722, South Korea

[2] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[3] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[4] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

来源：

PHYSICAL REVIEW D | 2007年 / 76卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.76.035005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper we show how some flavor symmetries may be derived from the heterotic string, when compactified on a 6D orbifold. In the body of the paper we focus on the D-4 family symmetry, recently obtained in Z(3)xZ(2) orbifold constructions. We show how this flavor symmetry constrains fermion masses, as well as the soft SUSY breaking mass terms. Flavor symmetry breaking can generate the hierarchy of fermion masses and at the same time the flavor symmetry suppresses large flavor changing neutral current processes.

引用

页数：11