An improved cosmological bound on the tau-neutrino mass

被引：22

作者：

Dolgov, AD ^{[1
]}

Pastor, S ^{[1
]}

Valle, JWF ^{[1
]}

机构：

[1] ITEP,MOSCOW 113259,RUSSIA

来源：

PHYSICS LETTERS B | 1996年 / 383卷 / 02期

关键词：

D O I：

10.1016/0370-2693(96)00718-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the influence of non-equilibrium electronic neutrinos (and anti-neutrinos) on the neutron-to-proton ratio. These neutrinos would come from massive nu(tau) annihilations <(nu)over bar (tau)nu(tau)> --> <(nu)over bar (e) nu(e)>. For sufficiently large nu(tau) masses this new effect would strongly enhance the (n/p)-ratio, leading to a very stringent bound on the nu(tau) mass, even adopting a rather weak upper bound on the effective number on neutrino species during nucleosynthesis.

引用

页码：193 / 198

页数：6

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