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Searching for realistic 4d string models with a Pati-Salam symmetry. Orbifold grand unified theories from heterotic string compactification on a Z(6) orbifold
文献类型：期刊论文
| 作者 | Kobayashi, T; Raby, S; Zhang, RJ; Kobayashi, T , Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. |
| 刊名 | NUCLEAR PHYSICS B
 |
| 出版日期 | 2005 |
| 卷号 | 704期号:40910页码:3-55 |
| 关键词 | 3-generation Superstring Model Continuous Wilson Lines Fayet-iliopoulos Terms Gauge Couplings Threshold Corrections Yukawa Couplings Standard Model Anomaly Cancellation Loop Corrections Field-theory |
| ISSN号 | 0550-3213 |
| 英文摘要 | Motivated by orbifold grand unified theories, we construct a class of three-family Pati-Salam models in a Z(6) Abelian symmetric orbifold with two discrete Wilson lines. These models have marked differences from previously-constructed three-family models in prime-order orbifolds. In the limit where one of the six compactified dimensions (which lies in a Z(2) sub-orbifold) is large compared to the string length scale, our models reproduce the supersymmetry and gauge symmetry breaking pattern of 5d orbifold grand unified theories on an S-1/Z(2) orbicircle. We find a horizontal 2 divided by 1 splitting in the chiral matter spectra-2 families of matter are localized on the Z(2) orbifold fixed points. and 1 family propagates in the 5d bulk-and identify them as the first-two and third families. Remarkably. the first two families enjoy a non-Abelian dihedral D-4 family symmetry. due to the geometric setup of the compactified space. In all our models there are always some color triplets. i.e.. (6.1.1) representations of the Pati-Salam group, survive orbifold projections. They could be utilized to spontaneously break the Pati-Salam symmetry to that of the Standard Model. One model. with a 5d E-6 symmetry. may give rise to interesting low energy phenomenology. We study gauge coupling unification. allowed Yukawa couplings and some of their phenomenological consequences. The E-6 model has a renormalizable Yukawa coupling only for the third family. It predicts a gauge-Yukawa unification relation at the 5d compactification scale, and is capable of generating reasonable quark/lepton masses and mixings. Potential problems are also addressed, they may point to the direction for refining our models. (C) 2004 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000226217700001 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13907]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Kobayashi, T , Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. |
| 推荐引用方式 GB/T 7714 | Kobayashi, T,Raby, S,Zhang, RJ,et al. Searching for realistic 4d string models with a Pati-Salam symmetry. Orbifold grand unified theories from heterotic string compactification on a Z(6) orbifold[J]. NUCLEAR PHYSICS B,2005,704(40910):3-55. |
| APA | Kobayashi, T,Raby, S,Zhang, RJ,&Kobayashi, T , Kyoto Univ, Dept Phys, Kyoto 6068502, Japan..(2005).Searching for realistic 4d string models with a Pati-Salam symmetry. Orbifold grand unified theories from heterotic string compactification on a Z(6) orbifold.NUCLEAR PHYSICS B,704(40910),3-55. |
| MLA | Kobayashi, T,et al."Searching for realistic 4d string models with a Pati-Salam symmetry. Orbifold grand unified theories from heterotic string compactification on a Z(6) orbifold".NUCLEAR PHYSICS B 704.40910(2005):3-55. |
入库方式： OAI收割
来源：理论物理研究所
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