Signals of the QCD axion with mass of 17 MeV/c^2: nuclear transitions and light meson decays

Daniele S. M. Alves

The QCD axion remains experimentally viable in the mass range of O(10 MeV) if (i) it couples predominantly to the first generation of SM fermions; (ii) it decays to $e^{+}{e}^{-}$ with…