Study of the reaction Open image in new window from 1.0 to 1.6 GeV/cfrom 1.0 to 1.6 GeV/c

The reaction \(\bar pn \to p\bar p\pi ^ - \) has been studied in the c.m. energy interval from 2.08 to 2.29 GeV. Our data exclude that the bump observed in the Open image in new window cross-section forI=1 at a laboratory momentum of 1.32 GeV/c is due to the production of one pion. The cross-section for this reaction rises only slowly with energy after the threshold for isobar production is reached.