Q-Ball Formation, Baryogenesis, and Dark Matter in the Gauge-Mediated SUSY Breaking Scenario

Details Q-Ball Formation, Baryogenesis, and Dark Matter in the Gauge-Mediated SUSY Breaking Scenario Q-Ball Formation, Baryogenesis, and Dark Matter in the Gauge-Mediated SUSY Breaking Scenario

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cosm.conf..346k&link_type=abstract

COSMO-2000 . Proceedings of the Fourth International Workshop on Particle Physics and the Early Universe . Held 4-8 September 20

Physics

Scientific paper

We consider the Q-ball formation, and its implication to cosmology in the context of gauge-mediated SUSY breaking in minimal supersymmetric standard model. In addition to the usual stable Q ball investigated in the literature, we obtain a new type of a stable Q ball. It is so-called gravity-mediation type of Q ball, but also stable against the decay into nucleons, since the energy per unit charge is equal to gravitino mass m3/2, which can be smaller than nucleon mass in the gauge-mediation mechanism. We consider the cosmological consequences in this new Q-ball scenario, and find that this new type of the Q ball can be considered as the dark matter and the source for the baryon number of the universe simultaneously.

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