Cold dark matter candidates and the solar neutrino problem
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.
- Research Organization:
- Lyman Laboratory of Physics, Harvard University; Harvard-Smithsonian Center for Astrophysics
- OSTI ID:
- 5728241
- Journal Information:
- Astrophys. J.; (United States), Vol. 299:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
MILKY WAY
ELEMENTARY PARTICLES
SOLAR NEUTRINOS
MASS
ABUNDANCE
ANNIHILATION
CAPTURE
COSMIC RADIATION
COSMOLOGY
CROSS SECTIONS
INTERACTIONS
SCATTERING
SUPERSYMMETRY
BASIC INTERACTIONS
ELECTROMAGNETIC INTERACTIONS
FERMIONS
GALAXIES
IONIZING RADIATIONS
LEPTONS
MASSLESS PARTICLES
NEUTRINOS
RADIATIONS
SOLAR PARTICLES
SOLAR RADIATION
STELLAR RADIATION
SYMMETRY
640105* - Astrophysics & Cosmology- Galaxies
640104 - Astrophysics & Cosmology- Solar Phenomena