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

Abstract

A possible hint of dark matter annihilation has been found in Cuoco, Korsmeier and Krämer (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.

12 pages + references, 4 figures, v2: References added, minor changes in presentation, matches journal version

References in corpus (23)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Results from a search for dark matter in the complete LUX exposure
• Gauge Singlet Scalars as Cold Dark Matter
• Searching for Dark Matter Annihilation in Recently Discovered Milky Way Satellites with Fermi-LAT
• Background model systematics for the Fermi GeV excess
• The Local Dark Matter Density
• The Fermi Galactic Center GeV Excess and Implications for Dark Matter
• Cosmic-Ray Proton and Helium Spectra from the First CREAM Flight
• Constraints on WIMP Dark Matter from the High Energy PAMELA $\bar{p}/p$ data
• Possible Evidence For Dark Matter Annihilation In The Inner Milky Way From The Fermi Gamma Ray Space Telescope
• Dwarf galaxy annihilation and decay emission profiles for dark matter experiments
• Galactic Center gamma-ray "excess" from an active past of the Galactic Centre?
• Millisecond pulsars and the Galactic Center gamma-ray excess: the importance of luminosity function and secondary emission
• The galactic antiproton spectrum at high energies: background expectation vs. exotic contributions
• Updated cosmic-ray and radio constraints on light dark matter: Implications for the GeV gamma-ray excess at the Galactic center
• What Does The PAMELA Antiproton Spectrum Tell Us About Dark Matter?
• New calculation of antiproton production by cosmic ray protons and nuclei
• Antiproton constraints on the GeV gamma-ray excess: a comprehensive analysis
• Galactic cosmic-ray propagation in the light of AMS-02: I. Analysis of protons, helium, and antiprotons
• Class of Higgs-portal Dark Matter models in the light of gamma-ray excess from Galactic center
• A fussy revisitation of antiprotons as a tool for Dark Matter searches
• Can AMS-02 discriminate the origin of an anti-proton signal?
• Antiproton signatures from astrophysical and dark matter sources at the galactic center

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