Search for right-handed neutrinos from dark matter annihilation with gamma-rays

Understand

Several extensions of the Standard Model contain right-handed (sterile) neutrinos in the GeV-TeV mass range.

• Due to their mixing with the active neutrinos, they may give rise to novel effects in cosmology, neutrino physics, and collider searches.
• In addition, right-handed neutrinos can also appear as final states from dark matter annihilations, with important implications for dark matter indirect detection searches.
• In this paper, we use current data from the Fermi Large Area Telescope (6-year observation of dwarf spheroidal galaxies) and H.E.S.S.