Physics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phrvd..30.2100p&link_type=abstract
Physical Review D (Particles and Fields), Volume 30, Issue 10, 15 November 1984, pp.2100-2104
Physics
12
Scientific paper
Heavy neutrinos having a mass of 10 keV or more can take an interesting role in galaxy formation. They can be consistent with the energy density of the present universe if their number density is accordingly small. This is possible even without having lepton flavor-violating neutrino decays if the neutrinos have interactions mediated by light scalars so that they decouple after they become nonrelativistic. We discuss the bounds on the properties of such scalars. A specific model is discussed where these bounds can be realized.
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