TWO DARK MATTER COMPONENTS IN NDMMSSM AND PAMELA DATA

Abstract

PAMELA has observed the significant excess of the positron flux fraction. We explain it in the context of the dark matter annihilation process in our Galaxy. Since there is the helicity suppression, a majorana spin-1/2 (e.g. a neutralino in MSSM) and spin-0 dark matter cannot explain the data. We extend the MSSM minimally to incorporate 2 component dark matter and to produce positron flux from their co-annihilation.