CLOSING THE WINDOWS ON MEV TAN NEUTRINOS

被引：28

作者：

BABU, KS

GOULD, TM

ROTHSTEIN, IZ

机构：

[1] JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218

[2] UNIV MICHIGAN,RANDALL LAB PHYS,ANN ARBOR,MI 48109

来源：

PHYSICS LETTERS B | 1994年 / 321卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(94)90340-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze various constraints on the ''visible'' decay modes of a massive tau neutrino, nu(tau) --> nu'gamma and nu tau --> nu'e(+)e(-), where nu' is a light neutrino. We point out that the BEBC experiment implies a new upper limit on the v, transition magnetic moment, mu(tran) less than or equal to 1.1 x 10(-9) (MeV/m(nu tau))(2) mu(B). Combining BEBC constraints with constraints arising from supernova observations and primordial nucleosynthesis calculations, we show that these ''visible'' modes cannot be the dominant decay modes of the MeV tau neutrino.

引用

页码：140 / 144

页数：5

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