Dependence of the WIMP Angular Kinetic-Energy Distribution on the Solar Galactic Orbital Velocity

TL;DR

This paper investigates how the angular kinetic-energy distribution of halo WIMPs depends on the Solar Galactic orbital velocity, aiming to improve model differentiation using directional dark matter detection data.

Contribution

It introduces modifications to the WIMP velocity distribution considering Solar Galactic velocity, aiding future dark matter model discrimination.

Findings

Distribution varies with Solar Galactic orbital velocity

Provides a basis for directional detection analysis

Enhances understanding of dark matter halo structure

Abstract

In this article, we study in a little more detail the angular kinetic-energy distribution of halo Weakly Interacting Massive Particles (WIMPs) and consider two simple modifications with the Solar Galactic orbital velocity in our Monte Carlo simulations of the 3-dimensional WIMP velocity as the first trial of future investigations on distinguishing models of the Galactic structure of Dark Matter particles by using directional direct detection data.