PS13 Particle Astrophysics (dark matter)
Indirect evidence for neutralinos as dark matter
Institut für Experimentelle Kernphysik, Universität Karlsruhe (TH), P.O. Box 6980, 76128 Karlsruhe, Germany
Accepted: 20 January 2004
Published online: 5 March 2004
From the relic density measurement by WMAP the WIMP annihilation cross section can be determined in a model independent way. If the WIMPS are postulated to be the neutralinos of Supersymmetry, then only a limited region of the supersymmetric parameter space matches this annihilation cross section. It is shown that the resulting positrons, antiprotons and gamma rays from the neutralino annihilation (mainly into quark pairs) provide the correct shape and order of magnitude for the missing gamma and hard positron fluxes in the Galactic Models and are consistent with antiproton production.
© Società Italiana di Fisica, Springer-Verlag, 2004