17-KEV NEUTRINO, MSW MECHANISM, AND SUPERNOVA CONSTRAINTS

被引：10

作者：

BABU, KS ^{[1
]}

MOHAPATRA, RN ^{[1
]}

ROTHSTEIN, IZ ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW D | 1992年 / 45卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.45.R5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A simple form for the neutrino mass matrix describing nu(e), nu(mu), nu(tau), and a sterile state nu(s) is proposed which accommodates the 17-keV neutrino as a nu(mu)-nu(tau) pseudo Dirac pair and simultaneously resolves the solar-neutrino puzzle via nu(e)-nu(s) Mikheyev-Smirnov-Wolfenstein (MSW) oscillation. This model, which is a specific realization of a scheme proposed recently by Caldwell and Langacker, is automatically free of all supernova constraints. It is shown that the mass matrix follows in a technically natural manner in extensions of the standard model with spontaneously broken global U(1)L(e) - L(mu) x U(1)L(tau) symmetry. The 17-keV neutrino decays to nu(e) and a Majoron with a lifetime of order 10(-1)-10(-2) sec, thus satisfying all cosmological and astrophysical constraints.

引用

页码：R5 / R9

页数：5

共 58 条

[1]

ACKER A, 1991, PHYS REV D, V45, pR1

[2] SIMPSON NEUTRINO AND THE SINGULAR SEE-SAW [J].