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26 April 2024 |
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Baryons, IN_c | | Richard F. Lebed
; | | Date: |
22 Jun 2004 | | Subject: | hep-ph | | Abstract: | Excited baryons may be analyzed in the 1/N_c expansion as true resonances in scattering amplitudes. The key idea making this program possible is a generalization of methods originally applied to chiral soliton models in the 1980’s. One finds model-independent relations among amplitudes that impose mass and width degeneracies among resonances of various quantum numbers. Phenomenological evidence demonstrates that patterns of resonant decay predicted by 1/N_c agree with data. The analysis can be extended to subleading orders in 1/N_c, where again agreement with data is evident. | | Source: | arXiv, hep-ph/0406236 | | Services: | Forum | Review | PDF | Favorites | |
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