Test of (ρ,A2) Exchange Degeneracy, Duality, and Evidence for Secondary Trajectories Obtained From (KN, K¯N) Charge-Exchange Reactions

Abstract

An analysis of the difference between the charge-exchange reactions $K^{+}n\to K^{0}p$ and $K^{-}p\to {\overline{K}}^{0}n$ over the momentum range 1-5.5 GeV/c provides strong evidence for exchange degeneracy of the ($\rho$, $A_2$) 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.