Extremely high energy neutrinos, neutrino hot dark matter, and the highest energy cosmic rays

被引：143

作者：

Yoshida, S ^{[1
]}

Sigl, G ^{[1
]}

Lee, S ^{[1
]}

机构：

[1] Univ Tokyo, Inst Cosm Ray Res, Tokyo 1888502, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.81.5505

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Extremely high energy (similar to 10(22) eV) cosmic neutrino beams initiate high energy particle cascades in the background of relic neutrinos from the big bang. We perform numerical calculations to show that such cascades could contribute more than 10% to the observed cosmic ray flux above 3 X 10(19) eV if neutrinos have similar to eV masses. The required intensity of primary neutrinos could be consistent with astrophysical models far their production if the maximum neutrino energy reaches to similar to 10(22) eV and the massive neutrino dark matter is locally clustered. Future observations of ultrahigh energy cosmic rays will lead to an indirect but practical search for neutrino dark matter.

引用

页码：5505 / 5508

页数：4

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