Argonne National Laboratory

Upcoming Events

Dark Matter Annihilating in the Galactic Center

HEP Division Seminar
Dan Hooper (Fermilab)
June 18, 2014 11:00AM to 12:00PM
Building 362, Room F108
Several groups have identified a spatially extended excess of ~1-3 GeV gamma rays from the region surrounding the Galactic Center. This excess is not only robust and highly statistically significant, but possesses a spectrum, angular distribution, and overall normalization that is in good agreement with that predicted by simple annihilating dark matter models. For example, the signal is very well fit by a 31-40 GeV dark matter particle annihilating to b quarks with an annihilation cross section of sigma v = (1.4-2.0) x 10-26 cm3/s. No plausible astrophysical explanations for this signal have been proposed. I will also discuss a number of particle physics models that could potentially account for this signal, and evaluate the prospects observing those models in direct detection experiments and at the LHC.