Description
Cold dark matter particles with an intrinsic matter-antimatter asymmetry do not annihilate
after gravitational capture by the Sun and can aect its interior structure. The rate of capture
is exponentially enhanced when such particles have self-interactions of the right order to explain
structure formation on galactic scales. A `dark baryon' of mass 5 GeV is a natural candidate and
has the required relic abundance if its asymmetry is similar to that of ordinary baryons. We show
that such particles can solve the `solar composition problem'. The predicted small decrease in the
low energy neutrino
uxes may be measurable by the Borexino and SNO+ experiments.
| ArXiv number (if any) | 1003.4505 |
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