SU 3 comparison of line reversed charge exchange and hyperchange exchange reactions

Abstract

The recent data at 10.1 GeV/ c on the hypercharge reactions π +p → K + Σ + (1385) and the line reversed processes are compared with the SU 3 related charge exchange processes K +n → K o p and K +p →K o Δ ++ and their line reversed partners in order to study the systematics of line reversal breaking. Allowing for a t- independent SU 3 breaking between charge and hypercharge exchange the data follow the SU 3 relations. We conclude that the line reversal breaking in the hypercharge exchange reactions is in agreement with the breaking in exchange degeneracy (in both flip and non-flip amplitudes) which is observed for the charge exchange processes.