We examine the ability for the Large Area Telescope (LAT) to constrain Minimal Supersymmetric Standard Model (MSSM) dark matter through a combined analysis of Milky Way dwarf spheroidal galaxies. We examine the Lightest Supersymmetric Particles (LSPs) for a set of ~71k experimentally valid supersymmetric models derived from the phenomenological-MSSM (pMSSM). We find that none of these models can be excluded at 95% confidence by the current analysis; nevertheless, many lie within the predicted reach of future LAT analyses. With two years of data, we find that the LAT is currently most sensitive to light LSPs (m_LSP < 50 GeV) annihilating into tau-pairs and heavier LSPs annihilating into b-bbar. Additionally, we find that future LAT analyses will be able to probe some LSPs that form a sub-dominant component of dark matter. We directly compare the LAT results to direct detection experiments and show the complementarity of these search methods.
@article{arxiv.1111.2604,
title = {Constraints on the pMSSM from LAT Observations of Dwarf Spheroidal Galaxies},
author = {R. C. Cotta and A. Drlica-Wagner and S. Murgia and E. D. Bloom and J. L. Hewett and T. G. Rizzo},
journal= {arXiv preprint arXiv:1111.2604},
year = {2013}
}