Predicted mass, relic abundance, and indirect detection via gamma rays of a new dark matter WIMP

Using micrOMEGAs, the speaker has performed calculations of the relic abundance and annihilation cross-section of a new dark matter WIMP (called the higgson in our previous publications) which is predicted by an extended Higgs sector. This particle is stable, and, because it has only second-order gauge interactions, it is consistent with all previous direct detection, indirect detection, and collider detection experiments. Comparison of the present calculations with the observed abundance of dark matter implies that the mass of this particle is about 70 GeV. The present calculations also yield the cross-section for annihilation in the current universe, which are found to be consistent with the limits for gamma ray emission from dwarf speroidal galaxies, and with the interpretation that gamma rays from the Galactic center observed by Fermi-LAT are evidence for annihilation of dark matter particles with a mass of ~ 70 GeV.