MSSM in view of PAMELA and Fermi-LAT

Details MSSM in view of PAMELA and Fermi-LAT MSSM in view of PAMELA and Fermi-LAT

2010-02-19

arxiv.org/abs/1002.3631v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Published version, figures updated

Scientific paper

We take the MSSM as a complete theory of low energy phenomena, including neutrino masses and mixings. This immediately implies that the gravitino is the only possible dark matter candidate. We study the implications of the astrophysical experiments such as PAMELA and Fermi-LAT, on this scenario. The theory can account for both the realistic neutrino masses and mixings, and the PAMELA data as long as the slepton masses lie in the $500-10^6 $TeV range. The squarks can be either light or heavy, depending on their contribution to radiative neutrino masses. On the other hand, the Fermi-LAT data imply heavy superpartners, all out of LHC reach, simply on the grounds of the energy scale involved, for the gravitino must weigh more than 2 TeV. The perturbativity of the theory also implies an upper bound on its mass, approximately $6-7 $TeV.

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