BOUNDS ON DIRAC NEUTRINO MASSES FROM NUCLEOSYNTHESIS

被引：15

作者：

DOLGOV, AD

KAINULAINEN, K

ROTHSTEIN, IZ

机构：

[1] FERMILAB NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510

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

[3] UNIV MINNESOTA,SCH PHYS & ASTRON,MINNEAPOLIS,MN 55455

来源：

PHYSICAL REVIEW D | 1995年 / 51卷 / 08期

关键词：

D O I：

10.1103/PhysRevD.51.4129

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We derive new bounds on the Dirac mass of the tau and muonic neutrinos. By solving the kinetic equation for the rate of energy deposition due to helicity-flipping processes and imposing the constraint that the number of effective species contributing to the energy density at the time of nucleosynthesis be Δkν<0.3, we find the bounds mνμ<150 keV and mντ<190 keV for TQCD=200 MeV. The constraint Δkν<0.1 leads to the much stronger bound mν<10 keV for both species of neutrinos. © 1995 The American Physical Society.

引用

页码：4129 / 4133

页数：5

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