New chiral-symmetry-breaking operators in pseudoscalar QCD sum rules

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dc.creatorForkel, Hilmar
dc.date2001-12-29
dc.date.accessioned2026-07-07T03:46:15Z
dc.date.available2026-07-07T03:46:15Z
dc.descriptionNonperturbative Wilson coefficients associated with the leading chiral-symmetry-breaking operators in the operator product expansion of the pseudoscalar QCD correlation function are derived. Implementation of the new, instanton-induced operators enables the corresponding spectral sum rule to reproduce the small pion mass scale, thereby reconciling it with Goldstone's theorem. The same operators suppress the contributions of pionic resonances. Several predictions and structural insights from the new sum rule are discussed.
dc.description15 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0112357
dc.identifierhttp://arxiv.org/abs/hep-ph/0112357
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/41212
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleNew chiral-symmetry-breaking operators in pseudoscalar QCD sum rules
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