Testing Meson Portal Dark Sector Solutions to the MiniBooNE Anomaly at CCM

A. A. Aguilar-Arevalo, S. Biedron, J. Boissevain +42

A solution to the MiniBooNE excess invoking rare three-body decays of the charged pions and kaons to new states in the MeV mass scale was recently proposed as a dark-sector explana…