Discrimination of Dark Matter Mass and Velocity Distribution by Directional Detection

TL;DR

This paper explores how directional detection methods can be used to distinguish between isotropic and anisotropic velocity distributions of dark matter, providing potential constraints on dark matter properties.

Contribution

It introduces a framework for constraining dark matter velocity anisotropy using directional detection data, addressing a gap in current dark matter detection techniques.

Findings

Directional detection can differentiate isotropic and anisotropic velocity distributions.

Constraints on dark matter anisotropy are achievable with current or near-future detectors.

The study highlights the importance of directional information in dark matter searches.

Abstract

The velocity distribution of dark matter is supposed to be isotropic Maxwell- Boltzmann distribution in most cases, however, its anisotropy is suggested by some simulations. We investigate conditions to give constraints on the anisotropy with directional direct detections.