TY - JOUR
T1 - Excited baryon phenomenology from large-[Formula presented] QCD
AU - Pirjol, Dan
AU - Yan, Tung Mow
PY - 1998
Y1 - 1998
N2 - We present a phenomenological analysis of the strong couplings of the negative-parity (Formula presented) baryons from the perspective of the large-(Formula presented) expansion. In the large-(Formula presented) limit the mass spectrum and mixing pattern of these states are constrained in a very specific way. The mixing angles are completely determined in this limit, with predictions in good agreement with experiment. In the combined large-(Formula presented) and SU(3) limits the pion couplings of the five negative-parity octets to the ground state baryons are given in terms of only 3 independent couplings. The large-(Formula presented) predictions for the ratios of strong couplings are tested against experimental data.
AB - We present a phenomenological analysis of the strong couplings of the negative-parity (Formula presented) baryons from the perspective of the large-(Formula presented) expansion. In the large-(Formula presented) limit the mass spectrum and mixing pattern of these states are constrained in a very specific way. The mixing angles are completely determined in this limit, with predictions in good agreement with experiment. In the combined large-(Formula presented) and SU(3) limits the pion couplings of the five negative-parity octets to the ground state baryons are given in terms of only 3 independent couplings. The large-(Formula presented) predictions for the ratios of strong couplings are tested against experimental data.
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U2 - 10.1103/PhysRevD.57.5434
DO - 10.1103/PhysRevD.57.5434
M3 - Article
AN - SCOPUS:0000697753
SN - 1550-7998
VL - 57
SP - 5434
EP - 5443
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 9
ER -