5-12 July 2017
Venice, Italy
Europe/Zurich timezone
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Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays

7 Jul 2017, 10:00
15m
Room Mosaici-2 (Palazzo del Casinò)

Room Mosaici-2

Palazzo del Casinò

Parallel Talk Dark Matter Dark matter

Speaker

Jan Heisig (RWTH Aachen University)

Description

We analyze cosmic-ray antiproton observations in the light of dark matter (DM) annihilation in our Galaxy using the recent precise AMS-02 measurements. Taking into account cosmic-ray propagation uncertainties by fitting at the same time DM and propagation parameters we find a significant indication of a DM signal for various annihilation channels in the mass range between 40 and 130 GeV and with an annihilation cross-section close to the thermal value. Intriguingly, this signal is compatible with the DM interpretation of the Galactic center gamma-ray excess and recent observation of dwarf satellite galaxies as we will demonstrate by perform a joint fit of the antiproton and gamma-ray data. As an example, we interpret our results in the Higgs Portal model.

Primary authors

Jan Heisig (RWTH Aachen University) Alessandro Cuoco (RWTH Aachen TTK) Michael Korsmeier (University of Torino) Michael Kramer (Rheinisch-Westfaelische Tech. Hoch. (DE))

Presentation Materials