Hadronic Footprint of GeV-Mass Dark Matter

Understand

GeV-scale dark matter is an increasingly attractive target for direct detection, indirect detection, and collider searches.

• Its annihilation into hadronic final states produces a challenging zoo of light hadronic resonances.
• We update Herwig7 to study the photon and positron spectra from annihilation through a vector mediator.
• It covers dark matter masses between 250 MeV and 5 GeV and includes an error estimate.