# Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays

## TL;DR

This paper investigates potential dark matter signals in cosmic-ray antiprotons and gamma rays, suggesting a possible dark matter annihilation signature consistent with other astrophysical observations and exploring its implications within the Higgs portal model.

## Contribution

It extends previous analyses to a broader range of annihilation channels and performs a joint fit with gamma-ray data and dwarf galaxy observations.

## Key findings

- Hints of dark matter with cross-section near thermal value
- Dark matter masses between 40 and 130 GeV depending on channel
- Compatibility with Galactic center gamma-ray excess

## Abstract

A possible hint of dark matter annihilation has been found in Cuoco, Korsmeier and Kr\"amer (2017) from an analysis of recent cosmic-ray antiproton data from AMS-02 and taking into account cosmic-ray propagation uncertainties by fitting at the same time dark matter and propagation parameters. Here, we extend this analysis to a wider class of annihilation channels. We find consistent hints of a dark matter signal with an annihilation cross-section close to the thermal value and with masses in range between 40 and 130 GeV depending on the annihilation channel. Furthermore, we investigate in how far the possible signal is compatible with the Galactic center gamma-ray excess and recent observation of dwarf satellite galaxies by performing a joint global fit including uncertainties in the dark matter density profile. As an example, we interpret our results in the framework of the Higgs portal model.