$G$-parity violating amplitudes in the $J/\ddot{I}ˆ\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}$ decay

Rinaldo Baldini Ferroli, Alessio Mangoni, Simone Pacetti

The decays of the negative $G$-parity meson $J/\ddot{I}ˆ$ into even numbers of pions violate $G$-parity. Such decays, as well as other $G$-parity decays into hadrons, can be parametrized…