Ultra high energy cosmic ray, superheavy dark matter and extra dimension

被引：10

作者：

Hagiwara, K ^{[1
]}

Uehara, Y

机构：

[1] KEK, Theory Grp, Tsukuba, Ibaraki 3050801, Japan

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

来源：

PHYSICS LETTERS B | 2001年 / 517卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(01)01021-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose a new mechanism for explaining the very long lifetime of superheavy dark matter X, which is proposed as a source of the ultra high-energy cosmic rays above the GZK cutoff (5 x 10(19) eV). The singlet X particle couples to the MSSM particles only through a bulk singlet field which develops the v.e.v. in the "hidden" brane. The distance between this hidden brane and the "visible" brane naturally leads to the exponential suppression of the coupling. The X particle decays predominantly into the higgsino and Higgs boson of the MSSM, and its decay spectrum is completely determined once their properties are known. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：383 / 386

页数：4

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