Antiprotons from Dark Matter: Current constraints and future sensitivities

  title={Antiprotons from Dark Matter: Current constraints and future sensitivities},
  author={Marco Cirelli and Gaelle Giesen},
  journal={Journal of Cosmology and Astroparticle Physics},
  • M. Cirelli, G. Giesen
  • Published 29 January 2013
  • Physics
  • Journal of Cosmology and Astroparticle Physics
We systematically analyze the impact of current and foreseen cosmic ray antiproton measurements on the properties of Dark Matter (DM). We find that: 1) The current data from PAMELA impose constraints on annihilating and decaying DM which are similar to (or even slightly stronger than) the most stringent bounds coming from FERMI gamma rays, for hadronic channels and with fiducial choices for the astrophysical parameters. 2) The upcoming data from AMS-02 have the power to improve these… 

Figures and Tables from this paper

Antiproton constraints on the GeV gamma-ray excess: a comprehensive analysis
A GeV gamma-ray excess has possibly been individuated in Fermi-LAT data from the Galactic Center and interpreted in terms of Dark Matter (DM) annihilations, either in hadronic (essentially
Robustness of dark matter constraints and interplay with collider searches for New Physics
A bstractWe study the implications of dark matter searches, together with collider constraints, on the phenomenological MSSM with neutralino dark matter and focus on the consequences of the related
Constraints on particle dark matter from cosmic-ray antiprotons
Cosmic-ray antiprotons represent an important channel for dark matter indirect-detection studies. Current measurements of the antiproton flux at the top of the atmosphere and theoretical
A fussy revisitation of antiprotons as a tool for Dark Matter searches
Antiprotons are regarded as a powerful probe for Dark Matter (DM) indirect detection and indeed current data from PAMELA have been shown to lead to stringent constraints. However, in order to exploit
What Does The PAMELA Antiproton Spectrum Tell Us About Dark Matter
Measurements of the cosmic ray antiproton spectrum can be used to search for contributions from annihilating dark matter and to constrain the dark matter annihilation cross section. Depending on the
Interpretation of AMS-02 results: correlations among dark matter signals
The AMS-02 collaboration has recently released data on the positron fraction e+/(e−+e+) up to energies of about 350 GeV. If one insists on interpreting the observed excess as a dark matter signal,
Constraints on decaying dark matter from the extragalactic gamma-ray background
If dark matter is unstable and the mass is within GeV-TeV regime, its decays produce high-energy photons that give contribution to the extragalactic gamma-ray background (EGRB). We constrain dark
Constraining the Higgs portal with antiprotons
A bstractThe scalar Higgs portal is a compelling model of dark matter (DM) in which a renormalizable coupling with the Higgs boson provides the connection between the visible world and the dark
Gamma ray tests of Minimal Dark Matter
We reconsider the model of Minimal Dark Matter (a fermionic, hypercharge-less quintuplet of the EW interactions) and compute its gamma ray signatures. We compare them with a number of gamma ray


Antiprotons from dark matter annihilation in the Galaxy: astrophysical uncertainties
The latest years have seen steady progresses in WIMP dark matter (DM) searches, with hints of possible signals suggested both in direct and indirect detection. Antiprotons play a key role in this
Gamma ray constraints on decaying dark matter
We derive new bounds on decaying Dark Matter from the gamma ray measurements of (i) the isotropic residual (extragalactic) background by Fermi and (ii) the Fornax galaxy cluster by H.E.S.S.. We nd
Antiprotons in cosmic rays from neutralino annihilation
We calculate the antiproton flux due to relic neutralino annihilations, in a two–dimensional diffusion model compatible with stable and radioactive cosmic ray nuclei. We find that the uncertainty in
PAMELA and FERMI limits on the neutralino-chargino mass degeneracy
Searches for Dark Matter (DM) particles with indirect detection techniques have reached important milestones with the precise measurements of the anti-proton () and gamma-ray spectra, notably by the
Galactic antiproton spectrum at high energies: Background expectation versus exotic contributions
A new generation of upcoming space-based experiments will soon start to probe the spectrum of cosmic-ray antiparticles with an unprecedented accuracy and, in particular, will open up a window to
Antiproton constraints on dark matter annihilations from internal electroweak bremsstrahlung
If the dark matter particle is a Majorana fermion, annihilations into two fermions and one gauge boson could have, for some choices of the parameters of the model, a non-negligible cross-section.
Constraining dark matter models from a combined analysis of Milky Way satellites with the Fermi Large Area Telescope.
This work presents a search for dark matter consisting of weakly interacting massive particles, applying a joint likelihood analysis to 10 satellite galaxies with 24 months of data of the Fermi Large Area Telescope, and is able to rule out models with the most generic cross section, using gamma rays.