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arXiv · hep-ph/0111348

Constraints on self-interacting Q-ball dark matter

K. Enqvist·A. Jokinen·T. Multamaki·I. Vilja
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Abstract

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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K. Enqvist, A. Jokinen, T. Multamaki, I. Vilja. 2001-11-27. Constraints on self-interacting Q-ball dark matter. https://doi.org/10.1016/s0370-2693(01)01500-3

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