Charged Q-ball Dark Matter from $B$ and $L$ direction

Understand

We consider nearly equal number of gauge mediation type charged (anti-) Q-balls with charge of $\alpha^{-1}\simeq137$ well before the BBN epoch and discussed how they evolve in time.

• We found that ion-like objects with electric charges of $+O(1)$ are likely to become relics in the present universe, which we expect to be the dark matter.
• These are constrained by MICA experiment, where the trail of heavy atom-like or ion-like object in $10^9$ years old ancient mica crystals is not observed.
• We found that the allowed region for gauge mediation model parameter and reheating temperature have to be smaller than the case of the neutral Q-ball dark matter.