String-derived D4 flavor symmetry and phenomenological implications
String-derived D4 flavor symmetry and phenomenological implications
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DOI：
10.1103/physrevd.76.035005
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发表时间：
2007-04
影响因子：
5
通讯作者：
P. Ko;Tatsuo C. Kobayashi;Jae-hyeon Park;S. Raby
中科院分区：
文献类型：
--
作者：
P. Ko;Tatsuo C. Kobayashi;Jae-hyeon Park;S. Raby
在本文中，我们将展示如何一些风味对称性可能来自杂种优势字符串，当紧化的6D orbifold。在本文的主体中，我们专注于D{sub 4}家庭的对称性，最近获得的Z{sub 3}xZ{sub 2} orbifold建设。我们展示了这种味道对称性如何约束费米子质量，以及软超对称性破缺质量项。味对称性破缺可以产生费米子质量的层次结构，同时味对称性抑制了大的味变化中性电流过程。
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{sub 4} family symmetry, recently obtained in Z{sub 3}xZ{sub 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.