A Z2 x Z2 standard model

被引：89

作者：

Blaszczyk, Michael ^{[2
,3
]}

Nibbelink, Stefan Groot ^{[1
,4
]}

Ratz, Michael ^{[5
]}

Ruehle, Fabian ^{[6
]}

Trapletti, Michele ^{[7
]}

Vaudrevange, Patrick K. S. ^{[1
]}

机构：

[1] Univ Munich, Arnold Sommerfeld Ctr Theoret Phys, D-80333 Munich, Germany

[2] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany

[3] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[4] Univ Sci & Technol China, Shanghai Inst Adv Study, Shanghai 201315, Peoples R China

[5] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

[6] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany

[7] Warsaw Univ, Inst Theoret Phys, PL-00681 Warsaw, Poland

来源：

PHYSICS LETTERS B | 2010年 / 683卷 / 4-5期

关键词：

ORBIFOLDS; STRINGS; SYMMETRY; MSSM;

D O I：

10.1016/j.physletb.2009.12.036

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a Z(2) x Z(2) orbifold compactification of the E-8 x E-8 heterotic string which gives rise to the exact chiral MSSM spectrum. The CUT breaking SU(5) -> SU(3)(c) x SU(2)(L) x U(1)(Y) is realized by modding out a freely acting symmetry. This ensures precision gauge coupling unification. Further, it allows us to break the GUT group without switching on flux in hypercharge direction, such that the standard model gauge bosons can remain massless when the orbifold singularities are blown up. The model has vacuum configurations with matter parity. a large top Yukawa coupling and other phenomenologically appealing features. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：340 / 348

页数：9

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