Muon Flux Limits for Majorana Dark Matter Particles

TL;DR

This paper investigates how muon flux measurements from Super-Kamiokande constrain the mass of Majorana dark matter particles predicted by the minimal walking technicolor model, revealing significant exclusions depending on interaction suppression.

Contribution

It provides new limits on MWT dark matter particle masses based on muon flux data, considering different interaction suppression scenarios and DM distribution parameters.

Findings

Super-Kamiokande limits exclude certain mass ranges for MWT dark matter.

Exclusion depends strongly on local dark matter distribution assumptions.

Suppressed interaction models are constrained between 100-200 GeV.

Abstract

We analyze the effects of capture of dark matter (DM) particles, with successive annihilations, predicted in the minimal walking technicolor model (MWT) by the Sun and the Earth. We show that the Super-Kamiokande (SK) upper limit on excessive muon flux disfavors the mass interval between 100-200 GeV for MWT DM with a suppressed Standard Model interaction (due to a mixing angle), and the mass interval between 0-1500 GeV for MWT DM without such suppression, upon making the standard assumption about the value of the local DM distribution. In the first case, the exclusion interval is found to be very sensitive to the DM distribution parameters and can vanish at the extreme of the acceptable values.