Cold dark matter candidates and the solar neutrino problem

Details Cold dark matter candidates and the solar neutrino problem Cold dark matter candidates and the solar neutrino problem

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...299.1001k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 299, Dec. 15, 1985, p. 1001-1006.

Astronomy and Astrophysics

Astrophysics

90

Abundance, Cold Plasmas, Elementary Particle Interactions, Missing Mass (Astrophysics), Solar Neutrinos, Weak Energy Interactions, Annihilation Reactions, Capture Effect, Milky Way Galaxy, Scattering Cross Sections

Scientific paper

Certain currently proposed weakly interacting elementary particles can have a high probability of solar capture if they make up the Galactic halo. Their present abundance in the sun is here determined by balancing capture rates against annihilation rates. Both particle physics and cosmological considerations impose constraints on scattering and annihilation cross sections. In general, for the candidate particles here discussed (massive neutrinos, supersymmetric scalar neutrinos, and photinos), the inferred solar abundances are too small by three to four orders of magnitude to solve the solar neutrino problem. Extreme fine tuning, marginally possible in the case of the photino, could increase solar abundances to a level where the neutrino signature would be affected. Otherwise, either a particle with a net cosmological asymmetry, or else a new mechanism for strengthening the existing Majorana suppression of s-wave annihilation at very low energies, would seem to be required.

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