Enhancement of proton decay rates in supersymmetric SU(5) grand unified models

被引：27

作者：

Hisano, Junji ^{[1
,2
]}

Kobayashi, Daiki ^{[1
]}

Nagata, Natsumi ^{[1
,3
]}

机构：

[1] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan

[2] Univ Tokyo, IPMU, TODIAS, Kashiwa, Chiba 2778568, Japan

[3] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

来源：

PHYSICS LETTERS B | 2012年 / 716卷 / 3-5期

基金：

日本学术振兴会;

关键词：

UNIFICATION MASS; NUCLEON-DECAY; SUPPRESSION; CONSERVATION; ELECTROWEAK; SYMMETRY;

D O I：

10.1016/j.physletb.2012.08.037

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In the supersymmetric grand unified theories (SUSY GUTS), gauge bosons associated with the unified gauge group induce proton decay. We investigate the proton decay rate via the gauge bosons in the SUSY GUTs under the two situations; one is with extra vector-like multiplets, and the other is with heavy sfermions. It is found that the proton lifetime is significantly reduced in the former case, while in the latter case it is slightly prolonged. Determination of the particle contents and their mass spectrum below the GUT scale is important to predict the proton lifetime. The proton decay searches have started to access to the 10(16) GeV scale. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：406 / 412

页数：7

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