Projected sensitivity to light WIMP-like particles of the BULLKID-DM experiment

TL;DR

BULLKID-DM is a silicon-based detector designed to search for light WIMP-like dark matter particles around 1 GeV, aiming for high sensitivity and low background detection capabilities.

Contribution

This work presents the projected sensitivity of the BULLKID-DM experiment to light WIMP-like particles, including comparisons with other future experiments.

Findings

Projected sensitivity to light WIMPs around 1 GeV.

Potential to improve detection limits for low-mass dark matter.

Design features to control background from natural radioactivity.

Abstract

BULLKID-DM is an experiment designed for the direct searches of particle dark matter candidates with mass around 1 GeV, or below, and cross-section with nucleons smaller than $10^{-40}$ cm$^2$. The detector consists of a stack of diced silicon wafers, acting as arrays of particle absorbers, sensed by multiplexed Kinetic Inductance Detectors. The target will amount to 800 g subdivided in more than 2000 silicon dice, with the aim of controlling the background from natural radioactivity by creating a fully active structure and by applying fiducialization techniques. In this work we present the projected sensitivity of BULLKID-DM to light WIMP-like particles considering also the other future experiments in the field.