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

TL;DR

This paper explores the potential for IceCube to detect Q-ball dark matter within gauge-mediated supersymmetry breaking, highlighting its viability as a dark matter candidate under specific cosmological conditions.

Contribution

It demonstrates that Q-ball dark matter can be detected by IceCube and identifies parameter regions where Q balls are the preferred dark matter candidate, differing from gravitino scenarios.

Findings

Q balls can serve as dark matter in certain gauge mediation parameters.

IceCube has potential to detect Q-ball dark matter in future experiments.

Q balls are viable dark matter candidates at low reheating temperatures.

Abstract

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 the peculiar feature compared to the case of gravitino dark matter.