Electron-target experiment constraints on light dark matter produced in primordial black hole evaporation

TL;DR

This paper investigates how primordial black holes could produce light dark matter particles and uses existing and future terrestrial experiments to constrain this scenario, providing new limits on dark matter properties and black hole contributions.

Contribution

It introduces a novel method to constrain light dark matter produced by primordial black hole evaporation using electron scattering data from current and upcoming experiments.

Findings

Current Super-Kamiokande and XENON1T data set constraints on boosted dark matter from PBHs.

Future experiments could improve bounds on dark matter-electron scattering cross sections.

Constraints on the fraction of dark matter composed of primordial black holes are established.

Abstract

Light sub-GeV dark matter (DM) particles in the Milky Way or macroscopic objects such as primordial black holes (PBHs) become attractive DM candidates due to null results of WIMP from direct detection experiments. We explore the possibility in which the present PBHs play as a novel source to produce light boosted DM and confine light PBHs with current and future terrestrial facilities. We study the electron elastic scattering data and obtain the current constraints from Super-Kamiokande and XENON1T on the boosted DM from PBH evaporation. The prospective bounds on the sub-GeV DM-electron scattering cross section and the fraction of DM composed of PBHs $f_{\rm PBH}$ are also imposed for future Xenon experiments.