Chiral aspects of hadron structure

Chiral loop corrections for hadronic properties are considered in a constituent quark model. It is emphasized that the correct implementation of such corrections requires a sum over intermediate hadronic states. The leading non-analytic corrections are very important for baryon magnetic moments and explain the failure of the sum rule $(μ_{Σ^{+}}+2μ_{Σ^{-}})/μ_Λ=-1$ predicted by the constituent quark model.

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