p̄+p→K++K-+π++π- reaction in the momentum range 400-670 MeV/c

The cross sections for the reaction p̄+p→K++K-+π++π- were measured at six momenta from 400 to 670 MeV/c. Various effective mass distributions indicate that about 37% of the reaction involves K0 or K̄0, 16% proceeds via the intermediate state K0+K̄0, about 21% involves , 5% proceeds via the state, and the rest follows phase space. © 1992 The American Physical Society.