Neutrino telescopes as a direct probe of supersymmetry breaking.
Neutrino telescopes as a direct probe of supersymmetry breaking.
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DOI：
10.1103/physrevlett.92.221802
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发表时间：
2003-12
影响因子：
8.6
通讯作者：
I. Albuquerque;G. Burdman;Z. Chacko
中科院分区：
文献类型：
--
作者：
I. Albuquerque;G. Burdman;Z. Chacko
我们考虑超对称破缺的尺度在5 × 10（6）到5 × 10（8）GeV之间的模型。在这类理论中，包括介导超对称破缺的模型，最轻的超对称粒子是引力子，其次是典型的长寿带电slepton，其寿命在1微秒到1秒之间，取决于其质量。我们调查这些粒子的生产扩散通量的高能中微子碰撞核子在地球上，和他们的观察在大型冰或水切伦科夫探测器的潜力。小的生产横截面部分地被非常长的slepton范围所补偿。信号是两个分开的平行轨道，背景很小。使用Waxman-Bahcall极限的中微子通量的结果在一年四个事件在km 3的实验。
We consider models where the scale of supersymmetry breaking lies between 5 x 10(6) and 5 x 10(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 km3 experiments.