Pion-Induced Pion Production on the Deuteron

Doubly differential cross sections were measured for pion production in the reaction π-d→π+π-nn at 256 and 331 MeV and in π+d→π-π+pp at 256 MeV. At each incident energy observations were made at 35 to 40 points distributed uniformly over the center-of-momentum phase space of the produced pion. Comparison of these measurements with the cross sections for π-p→π+π-n suggests that they are consistent with the dominance of quasifree production on a single nucleon. Upper limits for production of bound π-nn and π+pp systems were measured.