Polarization effects in $\bar{N}+N\to \pi +{\ell }^{+}+{\ell }^{-}$ reaction. General analysis and numerical estimations

G. I. Gakh, A. P. Rekalo, E. ~Tomasi-Gustafsson +2

A general formalism is developed to calculate the cross section and the polarization observables for the reaction $\bar{N}+N\to \pi +{\ell }^{+}+{\ell }^{-}$. The matrix element and the observab…