| Issue |
EAS Publications Series
Volume 36, 2009
Dark Energy and Dark Matter: Observations, Experiments and Theories
|
|
|---|---|---|
| Page(s) | 285 - 290 | |
| DOI | https://doi.org/10.1051/eas/0936040 | |
| Published online | 30 May 2009 | |
E. Pécontal, T. Buchert, Ph. Di Stefano and Y. Copin (eds)
EAS Publications Series, 36 (2009) 285-290
On the antimatter signatures of the cosmological dark matter subhalos
Dipartimento di Fisica Teorica, Università di Torino & INFN,
via Giuria 1, 10125 Torino, Italy
Corresponding author: lavalle@to.infn.it
While the PAMELA collaboration has recently confirmed the cosmic ray positron excess, it is interesting to review the effects of dark matter subhalos on the predicted antimatter signals. We recall that, according to the general subhalo properties as inferred from theoretical cosmology, the enhancement cannot be larger than ~20 for the antimatter yield. This bound is obviously different from what is found for γ-rays. We also show some predictions for supersymmetric benchmark models observable at the LHC and derived in the cosmological N-body framework, but remind the existing discrepancy between the profiles derived from N-body experiments and the current observations.
© EAS, EDP Sciences, 2009