Estimate of the cross sections of the reaction π- p →π+π-n near the threshold
Makarov M.M., Koptev V.P., Nelyubin V.V., Obrant G.Z., Sarantsev V.V., Tkach L.N., Trukhin M.I.
An experimental estimate is presented of the cross sections of the reaction тг~р—>7rf7T-n at energies 190 and 200 MeV.