IceCube potential for detecting Q-ball dark matter in gauge mediation

We study |Q|-ball dark matter in gauge-mediated supersymmetry breaking, and seek the possibility of detection in the IceCube experiment. We find that the |Q| balls would be the dark matter in the parameter region different from that for gravitino dark matter. In particular, the |Q| ball is a good dark matter candidate for low reheating temperature, which may be suitable for the Affleck–Dine baryogenesis and|$/$|or nonthermal leptogenesis. Dark matter |Q| balls are detectable by IceCube-like experiments in the future, which is a peculiar feature compared to the case of gravitino dark matter.