Pion-delta sigma-term
classification
✦ hep-ph
keywords
chiraldeltasigmaanalyticcloseconfigurationconsistentcounting
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We use a configuration space chiral model in order to evaluate nucleon and delta sigma-terms. Analytic expressions are consistent with chiral counting rules and give rise to expected non-analytic terms in the chiral limit. We obtain the results $\sigma_N=46$ MeV and $\sigma_{\Delta}=32$ MeV, which are very close to values extracted from experiment and produced by other groups.
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