TERT-CHANNEL COUPLINGS IN KAON-NUCLEON SCATTERING

Hyperbolic dispersion relations are used to examine elastic KN and tintin1 N amplitudes in the resonance region, and to extrapolate them to the annihilation channel. By evaluating the relations on a set of paths interior to the elastic channel physical regions, a spin separation of t-channel contributions is effected, and resonance couplings deduced. The results show clear evidence for effects attributable to exchanges with J≦3, several of which have not previously been isolated. The special problems associated with the isoscalar S-wave states are discussed, and an estimate made of the ɛ- S* mixing angle. © 1979, Springer-Verlag. All rights reserved.