AMS-02 and next-to-minimal universal extra dimensions

被引：7
|
作者：
Gao, Yu [1 ]
Kong, Kyoungchul [2 ]
Marfatia, Danny [3 ]
机构：
[1] Texas A&M Univ, Dept Phys & Astron, Mitchell Inst Fundamental Phys & Astron, College Stn, TX 77843 USA
[2] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA
[3] Univ Hawaii Manoa, Dept Phys & Astron, Honolulu, HI 96822 USA
来源：
PHYSICS LETTERS B | 2014年 / 732卷
关键词：
DARK-MATTER;
D O I：
10.1016/j.physletb.2014.03.060
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The anomaly detected by AMS-02 and PAMELA in the cosmic-ray positron flux when interpreted as arising from dark matter annihilation suggests that dark matter may interact differently with hadrons and leptons so as to remain compatible with cosmic-ray antiproton data. Such a scenario is readily accommodated in models with extra spatial dimensions. We study indirect detection of Kaluza-Klein (KK) dark matter in universal extra dimensions with brane-localized terms and fermion bulk masses: next-to-minimal universal extra dimensions. So that an excess of antiprotons is not produced in explaining the positron anomaly, it is necessary that the KK bulk masses in the lepton and hadron sectors be distinct. Even so, we find that cosmic-ray data disfavor a heavy KK photon dark matter scenario. Also, we find these scenarios with flavor-universal bulk masses to be in conflict with dijet and dilepton searches at the LHC. (C) 2014 The Authors. Published by Elsevier B.V.
引用
收藏
页码：269 / 272
页数：4
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