We have examined the detectability of weakly interacting dark matter candidates that constitute not all, but only a subdominant component of galactic cold dark matter. We find that neutralinos may remain detectable in direct dark matter searches even if they constitute only 1% of the halo dark matter. Regarding indirect detection, we find that upward-going muon fluxes in underground detectors from neutralino annihilations in the Sun and in the Earth can remain above the threshold of detectability of 10 muons/km2/yr for neutralinos composing 1% or more of the halo dark matter. Thus if a signal is seen in any of the current dark matter searches it is possible we are only detecting the subdominant component of the total cold dark matter.
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science