Understand
Recent observatons of high-energy positrons and electrons by the PAMELA and ATIC experiments may be an indication of the annihilation of dark matter into leptons and not quarks.
- This leptonic connection was foreseen already some years ago in two different models of radiative neutrino mass.
- We discuss here the generic interactions (nu eta^0 - l eta^+) chi and l^c zeta^- chi^c which allow this to happen, where chi and/or chi^c are fermionic dark-matter candidates.
- We point out in particular the importance of chi chi to l^+ l^- gamma to both positron and gamma-ray signals within this framework.
Reading the bibliography…