Excited baryon decay widths in large [Formula Presented] QCD

Thomas D. Cohen, Daniel C. Dakin, Abhinav Nellore, Richard Lebed

Research output: Contribution to journalArticlepeer-review


We study excited baryon decay widths in large [Formula Presented] QCD. It was suggested previously that some spin-flavor mixed-symmetric baryon states have strong couplings of [Formula Presented] to nucleons [implying narrow widths of [Formula Presented] as opposed to the generic expectation based on Witten’s counting rules of an [Formula Presented] coupling. The calculation obtaining these narrow widths was performed in the context of a simple quark-shell model. This paper addresses the question of whether the existence of such narrow states is a general property of large [Formula Presented] QCD. We show that a general large [Formula Presented] QCD analysis does not predict such narrow states; rather they are a consequence of the extreme simplicity of the quark model.

Original languageEnglish (US)
Pages (from-to)8
Number of pages1
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number5
StatePublished - 2004

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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