A proposal to study the reaction pi- p --> pi- pi+ n at the National Accelerator Laboratory

A proposal is made to study the reaction {pi}{sup -}p {yields} {pi}{sup -}{pi}{sup +}n at incident {pi}{sup -} moments of 20, 40, 60, and 80 GeV/c. Of particular interest in this final state are the s and t dependences of {rho}, f, and N* production, and the dynamics of the so-called multiperipheral region of the Dalitz plot. The directions of the incident {pi}{sup -} and outgoing {pi}{sup -} and {pi}{sup +} are determined by multiwire proportional counters and wire spark chambers. The direction and time-of-flight of the neutron is measured by means of a scintillation counter hodoscope