Directional detection of Dark Matter with MIMAC: WIMP identification and track reconstruction

TL;DR

This paper explores the potential of the MIMAC detector for directional dark matter detection, emphasizing its ability to reconstruct recoil tracks and distinguish WIMP signals from background noise to identify non-baryonic dark matter.

Contribution

It demonstrates for the first time that accurate track reconstruction with MIMAC can constrain WIMP properties and identify dark matter despite background interference.

Findings

Track reconstruction enables WIMP property constraints.

Directional detection distinguishes signal from background.

Likelihood analysis improves detection confidence.

Abstract

Directional detection is a promising Dark Matter search strategy. Indeed, WIMP-induced recoils present a direction dependence toward the Cygnus constellation, while background-induced recoils exhibit an isotropic distribution in the galactic rest frame. Taking advantage on these characteristic features and even in the presence of a sizeable background, we show for the first time the possibility to constrain the WIMP properties, both from particle and galactic halo physics, leading to an identification of non-baryonic Dark Matter. However, such results need highly accurate track reconstruction which should be reachable by the MIMAC detector using a dedicated readout combined with a likelihood analysis of recoiling nuclei.