DarkNeutrino FeynRules Files

he dark neutrino model consists of a realization of the neutrino mass mechanism at low scales. In
a nutshell, a new U(1)D gauge symmetry acting only on standard model singlets leads to the conservation
of lepton number. These “dark neutrinos” are vector-like under this new symmetry to ensure anomaly
cancellation. The spontaneous breaking of this symmetry by scalar fields in the dark sector simultaneously
breaks lepton number, which leads to nonzero neutrino masses. The breaking of the dark symmetry mixes
active and dark neutrinos, leading to a new interaction of active neutrinos: an up-scattering to dark neutrinos
via the exchange of the new gauge boson, ZD, which kinetically mix with the photon. This new interaction
could potentially explain the MiniBooNE anomaly: the dark neutrinos would decay to light neutrinos
and e+e− pairs; if the e+e− opening angle is small enough, MiniBooNE would classify these events as
electron-like events, i.e. the signature of the anomaly.