Chiral Symmetry of Nucleon Resonances in QCD sum rules

Details Chiral Symmetry of Nucleon Resonances in QCD sum rules Chiral Symmetry of Nucleon Resonances in QCD sum rules

2008-05-12

arxiv.org/abs/0805.1601v1

Phys.Rev.D78:014010,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages

Scientific paper

10.1103/PhysRevD.78.014010

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.

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