Partial Decay Widths of Negative Parity Baryons in the 1/Nc Expansion
C. Jayalath, J. L. Goity, E. Gonzalez de Urreta, N. N. Scoccola
TL;DR
This paper analyzes the partial decay widths of negative parity baryons using the 1/Nc expansion, incorporating SU(3) symmetry breaking, to predict decay widths and assess symmetry effects.
Contribution
It provides a detailed analysis of negative parity baryon decay widths within the 1/Nc framework, including sub-leading and SU(3) breaking effects, offering new predictions.
Findings
SU(3) breaking effects are significant in decay widths
Predictions for unknown decay widths of certain resonances
Quantitative assessment of 1/Nc expansion validity
Abstract
The partial decay widths of lowest lying negative parity baryons belonging to the 70-plet of SU(6) are analyzed in the framework of the 1/Nc expansion The channels considered are those with single pseudo-scalar meson emission. The analysis is carried out to sub-leading order in 1/Nc and to first order in SU(3) symmetry breaking. Conclusions about the magnitude of SU(3) breaking effects along with predictions for some unknown or poorly determined partial decay widths of known resonances are obtained.
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