Probing neutrino decays with the cosmic microwave background

被引：19

作者：

Hannestad, S ^{[1
]}

机构：

[1] Aarhus Univ, Inst Phys & Astron, DK-8000 Aarhus C, Denmark

来源：

PHYSICAL REVIEW D | 1999年 / 59卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.59.125020

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate in detail the possibility of constraining neutrino decays with data from the cosmic microwave background radiation (CMBR). Two generic decays are considered nu(H) --> nu(L)phi and nu(H) --> nu(L)<(nu)over bar>(L)nu(L). We have solved the momentum dependent Boltzmann equation in order to account for possible relativistic decays. Doing this, we estimate that any neutrino with mass m greater than or similar to 1 eV decaying before the present should be detectable with future CMBR data. Combining this result with other results on stable neutrinos, any neutrino mass of the order 1 eV should be detectable. [S0556-2821(99)06312-2].

引用

页数：7