Constraints on the Blazar-Boosted Dark Matter from the CDEX-10 Experiment

TL;DR

This paper presents new constraints on light, blazar-boosted dark matter using data from the CDEX-10 experiment, achieving the best sensitivities in the sub-MeV mass range among solid-state detectors.

Contribution

It provides the first constraints on blazar-boosted dark matter interactions using CDEX-10 data, covering a wide mass range and improving sensitivity in the sub-MeV regime.

Findings

Excluded DM-nucleon cross sections from 4.6×10⁻³³ to 10⁻²⁶ cm² for 10 keV to 1 GeV DM masses.

Achieved the best sensitivity among solid-state detectors in the sub-MeV mass range.

Demonstrated the potential of using astrophysical sources like blazars to probe light dark matter.

Abstract

We report new constraints on light dark matter (DM) boosted by blazars using the 205.4 kg day data from the CDEX-10 experiment located at the China Jinping Underground Laboratory. Two representative blazars, TXS 0506+56 and BL Lacertae are studied. The results derived from TXS 0506+56 exclude DM-nucleon elastic scattering cross sections from $4.6\times 10^{-33}\ \rm cm^2$ to $1\times10^{-26}\ \rm cm^2$ for DM masses between 10 keV and 1 GeV, and the results derived from BL Lacertae exclude DM-nucleon elastic scattering cross sections from $2.4\times 10^{-34}\ \rm cm^2$ to $1\times10^{-26}\ \rm cm^2$ for the same range of DM masses. The constraints correspond to the best sensitivities among solid-state detector experiments in the sub-MeV mass range.