Small-scale structure from neutron dark decay

TL;DR

This paper proposes a self-interacting dark matter model that explains neutron lifetime discrepancies and addresses small-scale structure issues in cosmology, aligning with current observations.

Contribution

It introduces a novel dark matter model based on neutron decay that resolves small-scale problems and matches cosmological data.

Findings

Reproduces correct dark matter relic abundance

Resolves small-scale structure problems

Compatible with cosmological and astrophysical bounds

Abstract

It was recently proposed that the disagreement in the experimental measurements of the lifetime of the neutron might be eradicated if the neutron decays to particles responsible for the dark matter in the Universe. In this paper we construct a proto- type self-interacting dark matter model which, apart from reproducing the correct relic abundance, resolves all small-scale problems of the $\Lambda$CDM paradigm. The theory is compatible with all present cosmological observations and astrophysical bounds.