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We discuss IG( scattering using a low-energy dominated sum rule derived from the SU(j)@SU(j) algebra of currents assuming the pionic and the kaonic pole dominance hypotheses. The exact validity of the latter assumptions implies a much larger S-wave KJC scattering in the I = l/2 channel than in the I = 3/2 channel. The use of the current algebra scattering lengths for threshold elastic KJ~ scattering suggest that this discrimination is due to a scalar I = l/2 resonance. If this is the kappadoi:10.1103/physrev.172.1850 fatcat:qv44razwpnfffixxqxegwsqzoe