Baryon masses and flavour symmetry breaking of chiral condensates

The masses of the baryon octet and decuplet are reproduced with a (10-20)% accuracy by ratios of exponential moment QCD spectral sum rules, obeying the τ (sum rule variable) stability criterion. The onset of the QCD continuum is determined by consistency with the lowest dimensional finite energy sum rule. The N-Δ mass splitting is mainly controlled by the size of the mixed condensate. The observed masses of the strange baryons can only be reproduced if there is a large breaking of the chiral condensates and . This result is independent of the choice of the nucleon current. (orig.)