RELAXING NUCLEOSYNTHESIS BOUNDS ON STERILE NEUTRINOS

被引：46

作者：

BABU, KS ^{[1
]}

ROTHSTEIN, IZ ^{[1
]}

机构：

[1] UNIV MARYLAND,DEPT PHYS & ASTRON,COLLEGE PK,MD 20742

来源：

PHYSICS LETTERS B | 1992年 / 275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(92)90860-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have analyzed the constraints arising from nucleosynthesis on possible oscillation between a doublet neutrino (nu(e), nu(mu) or nu(tau)) and a sterile neutrino (nu(s)) in the presence of their couplings to a majoron. The bounds on the mixing angle and mass-squared difference derived previously based on the standard model interactions are found to be weakened by several orders of magnitude. For the case of a 17 keV pseudo-Dirac nu(tau), the constraint on the singlet-doublet mass splitting is relaxed to \delta-m2\ less-than-or-equal-to O(10) eV2.

引用

页码：112 / 118

页数：7

共 30 条

[1]

BABU KS, 1991, 91186 MARYL PREPR

[2] BOUNDS ON STERILE NEUTRINOS FROM NUCLEOSYNTHESIS [J].