Chiral symmetry of nucleon resonances in QCD sum rules

2008/05/12 by T. Nakamura, Philipp Gubler, P. Gubler +2
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.78.014010

published as Phys.Rev.D78:014010,2008 · 11 pages

arxiv created 2008/05/12 · openalex publication_date 2008/07/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The QCD sum rule approach is employed in order to study chiral properties of positive- and negative-parity nucleon resonances. It is pointed out that nucleons with an ``exotic'' chiral property, which can be represented by local five-quark operators, can be paired with a standard nucleon forming a single chiral multiplet. The sum rules of the five-quark operators, however, are shown not to couple strongly to chirally exotic nucleon resonances at the mass region of less than 2 GeV.

Citations

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