Heavy-neutrino decays at neutrino telescopes

被引：21

作者：

Masip, Manuel ^{[1
]}

Masjuan, Pere

机构：

[1] Univ Granada, CAFPE, E-18071 Granada, Spain

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 09期

关键词：

OSCILLATIONS; BOUNDS;

D O I：

10.1103/PhysRevD.83.091301

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It has been recently proposed that a sterile neutrino nu(h) of mass m(h) = 40-80 MeV, mixing vertical bar U-mu h vertical bar(2) approximate to 10(-3)-10(-2), lifetime tau(h) <= 10(-9) s, and a dominant decay mode nu(h) -> nu gamma could be the origin of the experimental anomalies observed at LSND and MiniBooNE. Such a particle would be abundant inside air showers, as it can be produced in kaon decays. We use the Z-moment method to evaluate its atmospheric flux and the frequency of its decays inside neutrino telescopes. We show that nu(h) would imply around 104 contained showers of energy between 0.1 and 100 TeV per year inside a 0.03 km(3) telescope like ANTARES or the DeepCore in IceCube, while the standard background is 100 times smaller. Therefore, although it may be challenging from an experimental point of view, a search there could confirm this heavy-neutrino possibility.

引用

页数：5

共 22 条

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