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Title: Is a massive tau neutrino just what cold dark matter needs

Abstract

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.

Authors:
; ;  [1]
  1. (NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States) Department of Physics, The University of Chicago, Chicago, Illinois 60637-1433 (United States) Department of Astronomy Astrophysics, Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637-1433 (United States))
Publication Date:
OSTI Identifier:
7296123
Alternate Identifier(s):
OSTI ID: 7296123
Resource Type:
Journal Article
Journal Name:
Physical Review Letters; (United States)
Additional Journal Information:
Journal Volume: 72:24; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; UNIVERSE; TAU NEUTRINOS; ANISOTROPY; ELECTRON NEUTRINOS; ENERGY DENSITY; ENERGY SPECTRA; NUCLEOSYNTHESIS; ELEMENTARY PARTICLES; FERMIONS; HEAVY LEPTONS; LEPTONS; MASSLESS PARTICLES; NEUTRINOS; POSTULATED PARTICLES; SPECTRA; SYNTHESIS 662430* -- Properties of Leptons-- (1992-)

Citation Formats

Dodelson, S., Gyuk, G., and Turner, M.S. Is a massive tau neutrino just what cold dark matter needs. United States: N. p., 1994. Web. doi:10.1103/PhysRevLett.72.3754.
Dodelson, S., Gyuk, G., & Turner, M.S. Is a massive tau neutrino just what cold dark matter needs. United States. doi:10.1103/PhysRevLett.72.3754.
Dodelson, S., Gyuk, G., and Turner, M.S. Mon . "Is a massive tau neutrino just what cold dark matter needs". United States. doi:10.1103/PhysRevLett.72.3754.
@article{osti_7296123,
title = {Is a massive tau neutrino just what cold dark matter needs},
author = {Dodelson, S. and Gyuk, G. and Turner, M.S.},
abstractNote = {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.},
doi = {10.1103/PhysRevLett.72.3754},
journal = {Physical Review Letters; (United States)},
issn = {0031-9007},
number = ,
volume = 72:24,
place = {United States},
year = {1994},
month = {6}
}