Excited baryon decay widths in large [Formula Presented] QCD

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

Research output: Contribution to journalArticle

Abstract

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)
Number of pages1
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume69
Issue number5
DOIs
StatePublished - Jan 1 2004
Externally publishedYes

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baryons
quantum chromodynamics
decay
quark models
nucleons
counting
quarks

ASJC Scopus subject areas

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

Cite this

Excited baryon decay widths in large [Formula Presented] QCD. / Cohen, Thomas D.; Dakin, Daniel C.; Nellore, Abhinav; Lebed, Richard F.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 69, No. 5, 01.01.2004.

Research output: Contribution to journalArticle

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