Neutrino telescopes as a direct probe of supersymmetry breaking

被引:56
作者
Albuquerque, IFM
Burdman, G
Chacko, Z
机构
[1] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Theory Grp, Berkeley, CA 94720 USA
[4] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
基金
美国国家科学基金会;
关键词
D O I
10.1103/PhysRevLett.92.221802
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We consider models where the scale of supersymmetry breaking lies between 5x10(6) and 5x10(8) GeV. In this class of theories, which includes models of mediated supersymmetry breaking, the lightest supersymmetric particle is the gravitino, and the next to lightest is typically a long-lived charged slepton with a lifetime between a microsecond and a second, depending on its mass. We investigate the production of these particles by the diffuse flux of high energy neutrinos colliding with nucleons in the Earth, and the potential for their observation in large ice or water Cerenkov detectors. The small production cross section is partially compensated by the very long range of sleptons. The signal, two well-separated parallel tracks, has very little background. Using the Waxman-Bahcall limit for the neutrino flux results in up to four events a year in km(3) experiments.
引用
收藏
页码:221802 / 1
页数:4
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