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arxiv hep-ph/0009238 v1 pith:RZBEZPLC submitted 2000-09-20 hep-ph

Predictions for the Decays of Radially-Excited Baryons

classification hep-ph
keywords decaydecayspredictionsbaryonsstatesamplitudeapproximationassuming
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider decays of the lowest-lying radially excited baryons. Assuming a single-quark decay approximation, and negligible configuration mixing, we make model-independent predictions for the partial decay widths to final states with a single meson. Masses of unobserved states are predicted using an old mass formula rederived using large-$N_c$ QCD. The momentum dependence of the one-body decay amplitude is determined phenomenologically by fitting to observed decays. Comparison of these predictions to experiment may shed light on whether the Roper resonance can be interpreted as a three-quark state.

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