# First results on sub-GeV spin-dependent dark matter interactions with $^{7}$Li

## TL;DR

This study explores lithium-based detectors for low-mass spin-dependent dark matter interactions, demonstrating competitive limits in a challenging environment, and highlighting lithium's potential in cryogenic dark matter searches.

## Contribution

First experimental results showing lithium's viability as a target for low-mass spin-dependent dark matter detection in cryogenic setups.

## Key findings

- Set competitive limits on dark matter interactions with protons and neutrons.
- Demonstrated detector operation in an above-ground environment.
- Focused on the low-mass dark matter parameter space (0.8-1.5 GeV/c$^2$).

## Abstract

In this work, we want to highlight the potential of lithium as a target for spin-dependent dark matter search in cryogenic experiments, with a special focus on the low-mass region of the parameter space. We operated a prototype detector module based on a Li$_2$MoO$_4$ target crystal in an above-ground laboratory. Despite the high background environment, the detector sets competitive limits on spin-dependent interactions of dark matter particles with protons and neutrons for masses between 0.8 GeV/c$^2$ and 1.5 GeV/c$^2$.