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arXiv · hep-ph/9405287

QCD sum rules vs. chiral perturbation theory

David K. Griegel·Thomas D. Cohen
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Abstract

QCD sum rules are useful tools for studying the spectral properties of hadrons; however, assumptions underlying standard sum-rule analyses can lead to inconsistencies with known results of chiral perturbation theory. This possibility is demonstrated with QCD sum-rule extractions of the nucleon mass and $σ$ term. In both cases, inconsistent chiral behavior leads to an uncertainty in the sum-rule predictions of $\sim 100\,\text{MeV}$.

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David K. Griegel, Thomas D. Cohen. 1994-05-13. QCD sum rules vs. chiral perturbation theory. https://doi.org/10.1016/0370-2693(94)91003-0

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