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Description
The hypercentral Constituent Quark Model (hCQM) has been employed to obtain the resonance masses of light, strange baryons starting from N to $\Omega$ [1]. The model has linear potential with higher order correction terms with spin-orbit term to best possible predict the spectra of excited states. With these, the strong decays play a significant role towards the understanding of underlying properties for a given state. The pion decay channels have been dominantly observed in almost all the $N^*$ states [2]. However, there are other meson exchange resulting in the decay of N with mesons $\eta$, $\rho$, $\omega$ etc. Riska et al. have implemented chiral quark model to describe pion to nucleon coupling constant[3]. Experiments have shown a significant coupling of $N^*$(1535) to $\eta$N channel. In constituent quark model, N(1535)$\frac{1}{2}^-$ is considered to be mixed state of $P^2\frac{1}{2}-$ and $P^4\frac{1}{2}-$. An attempt has been made towards the study of such decay channels through the established chiral quark model and coupling constants obtained therein for the$N^*(1535) \rightarrow N \eta$.
The results for decay widths have been obtained for the resonance masses predicted using the hCQM model.
References:
1. C. Menapara and A. K. Rai, Few-Body Syst 65, 10 (2024)
2. S. Navas et al., [Particle Data Group], Phys. Rev. D 110, 030001 (2024)
3. D. Riska and G. Brown, Nucl. Phys. A 679, 577 (2001)
| Field of contribution | Phenomenology |
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