Constraints on self-interacting Q-ball dark matter

Details Constraints on self-interacting Q-ball dark matter Constraints on self-interacting Q-ball dark matter

2001-11-27

arxiv.org/abs/hep-ph/0111348v1

Phys.Lett. B526 (2002) 9-18

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 2 figures

Scientific paper

10.1016/S0370-2693(01)01500-3

We consider different types of Q-balls as self-interacting dark matter. For the Q-balls to act as the dark matter of the universe they should not evaporate, which requires them to carry very large charges; depending on the type, the minimum charge could be as high as Q \sim 10^{33} or the Q-ball coupling to ordinary matter as small as \sim 10^{-35}. The cross-section-to-mass ratio needed for self-interacting dark matter implies a mass scale of m \sim O(1) MeV for the quanta that the Q-balls consist of, which is very difficult to achieve in the MSSM.

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