A three-family standard-like orientifold model: Yukawa couplings and hierarchy

被引：79

作者：

Cvetic, M

Langacker, P ^{[1
]}

Shiu, G

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[2] Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA

[3] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA

[4] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[5] Univ Cambridge, Isaac Newton Inst Math Sci, Cambridge, England

来源：

NUCLEAR PHYSICS B | 2002年 / 642卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0550-3213(02)00684-3

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We discuss the hierarchy of Yukawa couplings in a supersymmetric three family standard-like string model. The model is constructed by compactifying type IIA string theory on a Z(2) x Z(2) orientifold in which the standard model matter fields arise from intersecting D6-branes. When lifted to M-theory, the model amounts to compactification of M-theory on a G(2) manifold. While the actual fermion masses depend on the vacuum expectation values of the multiple Higgs fields in the model, we calculate the leading worldsheet instanton contributions to the Yukawa couplings and examine the implications of the Yukawa hierarchy. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：139 / 156

页数：18

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