TEST OF (RHO,A2) EXCHANGE DEGENERACY, DUALITY, AND EVIDENCE FOR SECONDARY TRAJECTORIES OBTAINED FROM (KN, KBARN) CHARGE-EXCHANGE REACTIONS

An analysis of the difference between the charge-exchange reactions K+n→K0p and K-p→K̄0n over the momentum range 1-5.5 GeV/c provides strong evidence for exchange degeneracy of the (ρ, A2) trajectories and shows the importance of the exchange of secondary trajectories. The energy dependence of this difference is shown to be inconsistent with simple cut models. A new test of the duality principle is proposed and appears to be in good agreement with the present data. © 1969 The American Physical Society.