Effects of sterile neutrinos on the ultrahigh-energy cosmic neutrino flux

被引：54

作者：

Keränen, P

Maalampi, J

Myyryläinen, M

Riittinen, J

机构：

[1] NORDITA, DK-2100 Copenhagen, Denmark

[2] Univ Jyvaskyla, Dept Phys, SF-40351 Jyvaskyla, Finland

[3] Helsinki Inst Phys, Helsinki, Finland

来源：

PHYSICS LETTERS B | 2003年 / 574卷 / 3-4期

关键词：

D O I：

10.1016/j.physletb.2003.09.006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the effect of sterile neutrinos that are nearly degenerate with active ones on the flux of ultrahigh-energy cosmic ray neutrinos at earth. This offers a way to probe neutrino oscillations in the mass-squared range 10(-16) eV(2) less than or similar to deltam(2) less than or similar to 10(-11) eV(2) which maybe hard to detect by any other means. Taking into account the present experimental uncertainties of the active-active mixing angles and by allowing any values for the active-sterile mixing angles we find that the ratio of the electron and muon neutrino fluxes may change by -40% to 70% in comparison with the ratio in the absence of active-sterile mixing. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：162 / 168

页数：7

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