Abstract

We make use of the Fubini-Furlan current algebra sum rules to calculate the real part of the K −-nuclear ( A ⪅ 24) scattering lengths a. Re a is expressed in terms of equal-time commutators of currents and a dispersive integral over the off-mass-shell scattering amplitude. In evaluating the dispersion integral we assume that kaon capture occurs predominantly on a single nucleon. The kaon nucleus sigma term is written as a coherent sum of kaon nucleon sigma terms σ KN. Due to inconsistencies in the determinations of σ KN we present our results for different values of σ KN.

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