Mechanism for the f0(980) production in the reaction π−p→π0π0n

The model of the pure one-pion exchange mechanism, which gives a good description of the GAMS results on the alteration of the S-wave π0π0 mass spectrum in the f0(980) region in the reaction π−p→π0π0n with increasing −t, is compared with the recent detailed data on the m and t distributions of the π−p→π0π0n events obtained by the BNL-E852 Collaboration. It is shown that the predictions of this model are not confirmed by the BNL data. Therefore, the observed phenomenon should be explained by some different exchange mechanism.