Indirect Detection Constraints on the Model Space of Dark Matter Effective Theories

TL;DR

This paper uses gamma-ray flux limits from dwarf galaxies to constrain dark matter models with multiple annihilation channels, providing new bounds on effective operators and comparing them with collider results.

Contribution

It introduces a method to derive constraints on effective dark matter models with multiple final states using indirect detection data and visualizes these bounds in a novel way.

Findings

Constraints on dark matter effective operators are established.

Limits are compared with collider bounds.

Visualization of parameter space constraints is demonstrated.

Abstract

Using limits on photon flux from Dwarf Spheroidal galaxies, we place bounds on the parameter space of models in which Dark Matter annihilates into multiple final state particle pair channels. We derive constraints on effective operator models with Dark Matter couplings to third generation fermions and to pairs of Standard Model vector bosons. We present limits in various slices of model parameter space along with estimations of the region of maximal validity of the effective operator approach for indirect detection. We visualize our bounds for models with multiple final state annihilations by projecting parameter space constraints onto triangles, a technique familiar from collider physics; and we compare our bounds to collider limits on equivalent models.