Annihilation range and final-state interaction in the antiproton-proton annihilation into pi-pi+

Bruno El-Bennich, W. M Kloet, B. Loiseau

The large set of accurate data on differential cross section and analyzing power from the CERN LEAR experiment on $\bar{p}p\to {\pi }^{+}{\pi }^{-}$ in the range from 360 to 1550 MeV/c is well r…