Primordial black holes and mirror dark matter

TL;DR

This paper explores the role of primordial black holes as a gravitationally interacting dark matter component in models with mirror matter, providing constraints on PBH masses based on mirror baryon contributions.

Contribution

It introduces constraints on primordial black hole masses within mirror dark matter models, highlighting their potential as a significant dark matter component.

Findings

PBH mass range estimated between 10^{17} g and 10^{23} g.

Constraints derived on PBH abundance in mirror dark matter scenarios.

Mirror baryons and PBHs could jointly constitute dark matter.

Abstract

If mirror matter exists but cannot comprise all of the dark matter (DM) in the universe, we can expect that the additional DM component may only interact with the other sectors gravitationally. One of the natural candidate of a gravitationally interacting component is a primordial black hole (PBH). Therefore, if mirror matter exists but cannot comprise all of the DM in the universe, the existence of PBH may be expected as a candidate of the additional DM component. In this case, the remaining DM components may be PBHs or $SU(3)\times SU(2)\times U(1)$ singlet particles from PBH. We show constraints on PBH with the mirror DM. Particularly, the initial PBH mass is estimated to be $10^{17} \ {\rm g} \lesssim M_{\rm PBH} \lesssim 10^{23} \ {\rm g}$, if the DM comprises mirror baryons and PBHs.