Secondary antiprotons as a Galactic Dark Matter probe

Abstract

We present a novel determination of the astrophysical uncertainties associated to the secondary antiproton flux originating from cosmic-ray spallation on the interstellar gas. We select a set of propagation models compatible with the recent B/C data from PAMELA, and find those providing minimal and maximal antiproton fluxes in different energy ranges. We use this result to determine the most conservative bounds on relevant Dark Matter (DM) annihilation channels: We find that the recent claim of a DM interpretation of a gamma-ray excess in the Galactic Center region cannot be ruled out by current antiproton data. Finally, we discuss the impact of the recently released preliminary data from AMS-02. In particular, we provide a reference model compatible with proton, helium and B/C spectra from this experiment. Remarkably, the main propagation parameters of this model are in agreement with the best fit presented in our earlier statistical analyses. We also show that the antiproton-to-proton ratio does not exhibit any significant anomaly at high energy with respect to our predictions.

21 pages, 10 figures, 3 tables. Accepted for publication in JCAP. In v2, a novel strategy for computing DM bounds is exploited, strengthening v1 main results

References in corpus (18)

• Background model systematics for the Fermi GeV excess
• Weak Corrections are Relevant for Dark Matter Indirect Detection
• Spectral breaks as a signature of cosmic ray induced turbulence in the Galaxy
• Constraints on WIMP Dark Matter from the High Energy PAMELA $\bar{p}/p$ data
• Measurement of boron and carbon fluxes in cosmic rays with the PAMELA experiment
• WIMPs at the Galactic Center
• Gamma-ray sky points to radial gradients in cosmic-ray transport
• The galactic antiproton spectrum at high energies: background expectation vs. exotic contributions
• Cosmic Ray Electrons, Positrons and the Synchrotron emission of the Galaxy: consistent analysis and implications
• Updated cosmic-ray and radio constraints on light dark matter: Implications for the GeV gamma-ray excess at the Galactic center
• Antiproton constraints on the GeV gamma-ray excess: a comprehensive analysis
• Low energy cosmic ray positron fraction explained by charge-sign dependent solar modulation
• The Cosmic Ray Antiproton Background for AMS-02
• Theoretical uncertainties in extracting cosmic-ray diffusion parameters: the boron-to-carbon ratio
• Dark Matter Indirect Signatures
• Propagation in 3D spiral-arm cosmic-ray source distribution models and secondary particle production using PICARD
• Direct constraints on diffusion models from cosmic-ray positron data: Excluding the Minimal model for dark matter searches
• Secondary Cosmic Ray Nuclei from Supernova Remnants and Constraints to the Propagation Parameters

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