LIGHT NEUTRINOS AS COSMOLOGICAL DARK MATTER AND THE NEXT SUPERNOVA

被引：17

作者：

MINAKATA, H

NUNOKAWA, H

机构：

[1] Department of Physics, Tokyo Metropolitan University, Setagaya

来源：

PHYSICAL REVIEW D | 1990年 / 41卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.41.2976

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We point out that the light-neutrino hypothesis for cosmological dark matter can be tested by observing a neutrino burst from a type-II supernova. With the luck of a nearby (10 kpc) event watched by enlarged water Cherenkov detectors, such as the proposed super-Kamiokande, it might be possible to measure the tau- (heaviest-)neutrino mass. In such a case the statistically significant (4000-6000) »e absorption events would allow the precise determination of the neutrino flux and the temperature. By using a simple model of neutrino emission based on the simulation by Mayle, Wilson, and Schramm, we show that the existence of the neutrino mixing can be signaled by 20-30% excess of the scattering events in the water Cherenkov detector, and by factor 3 larger rate in Davis's Cl37 detector. The effect on the recoil electron energy spectrum is also analyzed. © 1990 The American Physical Society.

引用

页码：2976 / 2985

页数：10

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