IS A MASSIVE TAU-NEUTRINO JUST WHAT COLD DARK-MATTER NEEDS

被引：55

作者：

DODELSON, S

GYUK, G

TURNER, MS

机构：

[1] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

[2] UNIV CHICAGO,ENRICO FERMI INST,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.72.3754

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The cold dark matter scenario for structure formation in the Universe has many successes; however, when its spectrum of density perturbations is normalized to the Cosmic Background Explorer anisotropy measurement the level of inhomogeneity predicted on small scales is too large. This can be remedied by a tau neutrino of mass 1-10 MeV and lifetime 0.1-100 sec whose decay products include electron neutrinos because it allows the total energy density in relativistic particles to be doubled without interfering with nucleosynthesis.

引用

页码：3754 / 3757

页数：4

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