Status of dark matter indirect searches in the PAMELA and Fermi era
Dr. Aldo Morselli
(INFN Roma Tor Vergata)
Sala Seminarios IFIC (Edf. Institutos de Investigación) Jueves, 29 de Enero de 2009 a las 12:00 PM
Resumen
The detection of gamma-rays, antiprotons and positrons due to pair
annihilation of dark matter particles in the Milky Way halo is a
viable indirect technique to search for signatures of supersymmetric
dark matter where the major challenge is the discrimination of the
signal from the background generated by standard production
mechanisms. The new PAMELA antiproton data are consistent with the
standard secondary production and this allows us to constrain exotic
contribution to the spectrum due to neutralino annihilations.
Instead, the PAMELA positron fraction data exhibit an excess that
cannot be explained by secondary production.
PPB-BETS and ATIC reported a feature in electron spectrum at a few
hundred GeV.
We will discuss the possible conventional and exotic explanation and
in general the status of indirect dark matter searches and a perspective for
PAMELA and Fermi (formerly GLAST) gamma-ray space telescope experiments.
