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 language | English (US) |
|---|---|
| Number of pages | 1 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 69 |
| Issue number | 5 |
| DOIs | |
| State | Published - Jan 1 2004 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Excited baryon decay widths in large [Formula Presented] QCD
AU - Cohen, Thomas D.
AU - Dakin, Daniel C.
AU - Nellore, Abhinav
AU - Lebed, Richard F.
PY - 2004/1/1
Y1 - 2004/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85038988016&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85038988016&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.69.056001
DO - 10.1103/PhysRevD.69.056001
M3 - Article
AN - SCOPUS:85038988016
VL - 69
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 5
ER -