Analysis of the [56,2^+] Baryon Masses in the 1/Nc Expansion

C. Schat; J.L. Goity; N.N. Scoccola

Analysis of the [56,2^+] Baryon Masses in the 1/Nc Expansion

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arxiv hep-ph/0304167 v1 pith:CAEFC4QL submitted 2003-04-16 hep-ph nucl-th

J.L. Goity , C. Schat , N.N. Scoccola This is my paper

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keywords breakingeffectsexpansionmasssymmetryanalysisavailablebaryon

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The mass spectrum of the positive parity [56,2^+] baryons is studied in the 1/Nc expansion up to and including O(1/Nc) effects with SU(3) symmetry breaking implemented to first order. A total of eighteen mass relations result, several of which are tested with the available data. The breaking of spin-flavor symmetry is dominated by the hyperfine interactions, while spin-orbit effects are found to be small.

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