INCLUSIVE PION DOUBLE-CHARGE-EXCHANGE ON O-16 AT 600 AND 750 MEV

The double-differential cross section for the inclusive double-charge- exchange (DCX) reaction O-16(pi(-), pi(+))X is measured for the first time at energies T-0 = 600 and 750 MeV and angle similar to 5 degrees in the outgoing-pion-momentum region where additional-pion production is kinematically forbidden. Comparison with available inclusive data a t lower energy shows that the cross section for the DCX reaction on O- 16 slowly decreases with energy and does not exhibit a fast fall for T -0 > 500 MeV, as is expected for the mechanism of sequential single ch arge exchange. This indicates that other reaction mechanisms associate d, for example, with short-range NN correlations in nuclei can contrib ute in this energy region.