DarkNews: a Python-based event generator for heavy neutral lepton production in neutrino-nucleus scattering

Understand

We introduce DarkNews, a lightweight Python-based Monte-Carlo generator for beyond-the-Standard-Model neutrino-nucleus scattering.

• The generator handles the production and decay of heavy neutral leptons via additional vector or scalar mediators, as well as through transition magnetic moments.
• DarkNews samples pre-computed neutrino-nucleus upscattering cross sections and heavy neutrino decay rates to produce dilepton and single-photon events in accelerator neutrino experiments.
• We present two case studies with differential distributions for models that can explain the MiniBooNE excess.