Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-08-03
Phys.Rev.D78:103526,2008
Astronomy and Astrophysics
Astrophysics
19 pages, 9 figures. Backgrounds included and additional comments and figures on the positron fraction. Accepted for publicati
Scientific paper
10.1103/PhysRevD.78.103526
[Abridged]. We take advantage of the galaxy-like 3D dark matter map extracted from the HORIZON Project results to calculate the positron and antiproton fluxes from dark matter annihilation, in a model-independent approach as well as for dark matter particle benchmarks relevant at the LHC scale (from supersymmetric and extra-dimensional theories). Such a study is dedicated to a better estimate of the theoretical uncertainties affecting predictions, while the PAMELA and GLAST satellites are currently taking data which will soon provide better observational constraints. We discuss the predictions of the antiproton and positron fluxes, and of the positron fraction as well, as compared to the current data. We finally discuss the limits of the Nbody framework in describing the dark matter halo of our Galaxy.
Athanassoula Lia
Lavalle Julien
Ling F.-S.
Nezri Emmanuel
Teyssier Romain
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