A coupled-channel model with internal and external weak emission plus final-state rescattering reproduces the Belle peaks of N*(1535), N*(1650), and Sigma(1620) in Lambda_c+ -> anti-K0 eta p.
Theoretical study of the $N(1535)$ in the process $\Lambda_c^+\to n\pi^+\pi^0$
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abstract
We have investigated the $\Lambda_c^+\to n\pi^+\pi^0$ decay process using the chiral unitary approach, by considering that the nucleon resonance $N(1535)$ could be dynamically generated through $S$-wave pseudoscalar meson-octet baryon interactions. In the invariant mass distributions of $\pi^0n$ and $\pi^+n$, we observe a distinct peak structure associated with the resonance states $N(1535)^0$ and $N(1535)^+$, respectively. Our results suggest that the $\Lambda_c^+\to n\pi^+\pi^0$ process can be utilized to probe the properties of the nucleon $N(1535)$, and therefore, we encourage more precise experimental measurements of this process in the future.
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Revisiting the $\Lambda_c^+\rightarrow\bar{K}^0\eta p$ reaction: the role of $N^*(1535),~ N^*(1650)$ and $\Sigma(1620)$
A coupled-channel model with internal and external weak emission plus final-state rescattering reproduces the Belle peaks of N*(1535), N*(1650), and Sigma(1620) in Lambda_c+ -> anti-K0 eta p.