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Abstract
Isgur and Karl have recently analyzed the ground and low-lying excited baryon states; the negative-parity and positive-parity baryons are treated separately using different parameter sets. In this paper we show how the Hamiltonian introduced by Isgur and Karl to examine the positive-parity baryons can be modified to apply to the negative-parity baryons. In particular, the mass difference between ..lambda..5/2/sup -/ and ..sigma..5/2/sup -/ is restored to a value consistent with experiment.
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