SU(3) implications of the observation of the A1 and C mesons

Abstract A new determination of the Q A −Q B mixing angle and of the antisymmetric coupling for the vector-pseudoscalar decay of the axial vector mesons is presented. This uses information from the decay rates of the A 1 and C mesons found in the study of baryon exchange processes in K − p interactions at 4.2 GeV/ c combined with the decay rate B → ωπ . The consistency between the results obtained from backward produced A 1 and C and diffractively produced Q 1 and Q 2 is discussed.