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Related papers: Theoretical study of the $N(1535)$ in the process …

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We present a theoretical analysis of the process $\Lambda_c^+ \to p\bar{K}^0 \pi^0$ within the chiral unitary approach, with particular emphasis on the dynamically generated $N(1535)$ resonance. In addition to $N(1535)$, our model…

High Energy Physics - Phenomenology · Physics 2026-03-30 Ying Li , En Wang , Li-Sheng Geng , Ju-Jun Xie

We have investigated the process $\Lambda_c^+ \to \pi^+\eta n$ by taking into account the contributions from the nucleon resonance $N(1535)$ and the scalar meson $a_0(980)$, which could be dynamically generated by the interaction of the…

High Energy Physics - Phenomenology · Physics 2025-03-04 Meng-Yuan Li , Wen-Tao Lyu , Li-Juan Liu , En Wang

The nonleptonic weak decay of $\Lambda^+_c \to \bar{K}^0 \eta p$ is analyzed from the viewpoint of probing the $N^*(1535)$ resonance, which has a big decay branching ratio to $\eta N$. Up to an arbitrary normalization, the invariant mass…

High Energy Physics - Phenomenology · Physics 2017-09-20 Ju-Jun Xie , Li-Sheng Geng

Motivated by the recent experimental measurements, we have investigated the Cabibbo-favored process $\Lambda_c^+ \to p \bar{K}^0\eta$, where the $N(1535)$ resonance is dynamically generated from the $S$-wave pseudoscalar meson-octet baryon…

High Energy Physics - Phenomenology · Physics 2024-10-22 Ying Li , Si-Wei Liu , En Wang , De-Min Li , Li-Sheng Geng , Ju-Jun Xie

We perform a theoretical study of the weak decay $\Lambda_c^+ \rightarrow \bar{K}^0 \eta p$ using a coupled-channel chiral unitary approach that incorporates both pseudoscalar-baryon and vector-baryon interactions. Our framework includes…

High Energy Physics - Phenomenology · Physics 2025-07-28 Jing Song , Melahat Bayar , Yi-Yao Li , Eulogio Oset

We study the semileptonic decay of $\Lambda_c$ to $\nu l^+$ and $\Lambda(1405)$, where the $\Lambda(1405)$ is seen in the invariant mass distribution of $\pi \Sigma$. We perform the hadronization of the quarks produced in the reaction in…

High Energy Physics - Phenomenology · Physics 2016-01-27 N. Ikeno , E. Oset

We study the decay $\Lambda_c^+ \to \Lambda \pi^+ \pi^+ \pi^-$, focusing on the production of the $\Sigma^*(1430)$ resonance observed by the Belle Collaboration. Interpreted as a dynamically generated state from meson-baryon interactions in…

High Energy Physics - Phenomenology · Physics 2025-05-29 Yi-Yao Li , Jing Song , Eulogio Oset , Wei-Hong Liang , Raquel Molina

Recent studies of the $\Lambda(1520)$ resonance within chiral unitary theory with coupled channels find the resonance as a dynamically generated state from the interaction of the decuplet of baryons and the octet of mesons, essentially a…

Nuclear Theory · Physics 2008-11-26 M. Kaskulov , E. Oset

We propose to study the $a_0(980)$ and the $\Lambda(1670)$ resonances in the $\Lambda^+_c \to \pi^+ \eta \Lambda$ decay via the final state interactions of the $\pi^+ \eta$ and $\eta \Lambda$ pairs. The weak interaction part proceeds…

Nuclear Theory · Physics 2016-10-12 Ju-Jun Xie , Li-Sheng Geng

Inspired by the latest BESIII measurement of the $\Lambda(1520)\to\gamma\Sigma^0$ radiative decay, we systematically study the decays $\Lambda(1520)\to\gamma\Lambda(\Sigma^0)$ within the chiral unitary approach, where the $\Lambda(1520)$ is…

High Energy Physics - Phenomenology · Physics 2026-05-15 Rui-Xiang Shi , Yu-Bao Zhang , Jun-Xu Lu , Chun-Yan Song , Li-Sheng Geng

Inspired by recent BESIII's amplitude analysis on $D_s^+\to\pi^+\pi^0\pi^0$, we develop a model based on the chiral unitary approach to discribe the $D_s^+\to\pi^+\pi^0\pi^0$ decay, where $D_s^+$ decays into a $\pi^+$ and a quark-antiquark…

High Energy Physics - Phenomenology · Physics 2023-03-02 Xuan Luo , Aojia Xu , Ruitian Li , Hao Sun

In the chiral unitary approach, we have studied the single Cabibbo-suppressed decays $\Lambda_c\to pK^+K^-$ and $\Lambda_c \to p \pi^+\pi^-$ by taking into account the $s$-wave meson-meson interaction as well as the contributions from the…

High Energy Physics - Phenomenology · Physics 2020-10-28 Zhe Wang , Yan-Yan Wang , En Wang , De-Min Li , Ju-Jun Xie

We calculate the shape of the $\pi\Sigma$ and $\bar K N$ invariant mass distributions in the $\Lambda_b \to J/\psi\, \pi\Sigma$ and $\Lambda_b \to J/\psi \,\bar K N$ decays that are dominated by the $\Lambda(1405)$ resonance. The weak…

High Energy Physics - Phenomenology · Physics 2015-06-02 Luis Roca , Maxim Mai , Eulogio Oset , Ulf-G. Meißner

In order to study the properties of the $N^*$(1535) and $N^*$(1650) we calculate the mass distributions of $M B$ in the $\Lambda_c \rightarrow \bar{K}^0 M B$ decay, with $MB=\pi N(I=1/2),\eta p$ and $K\Sigma(I=1/2)$. We do this by…

Nuclear Theory · Physics 2018-07-11 R. Pavao , S. Sakai , E. Oset

We study the mechanism of the weak decay process of Xi_b^0 into D^0 with a meson-baryon pair. It is shown that the dominant component of the prompt weak decay produces the meson-baryon pair with the spectator strange quark being transferred…

Nuclear Theory · Physics 2018-08-22 Kenta Miyahara , Tetsuo Hyodo

We have performed a theoretical study on the process $\chi_{c0}(1P)\to \bar{\Lambda}\Sigma\pi$, by taking into account the final state interactions of $\pi\Sigma$ and $\pi\bar{\Lambda}$ based on the chiral unitary approach. As the isospin…

High Energy Physics - Phenomenology · Physics 2018-12-26 Li-Juan liu , En Wang , Ju-Jun Xie , Kai-Lan Song , Jing-Yu Zhu

In this paper, we first review the theoretical and experimental studies of the process $\Lambda_c^+ \to \pi^+ \eta \Lambda$. Motivated by the recent BESIII and Belle measurements, we have conducted a theoretical study of the process…

High Energy Physics - Phenomenology · Physics 2025-08-05 En Wang , Wen-Tao Lyu , Man-Yu Duan , Chu-Wen Xiao , Dian-Yong Chen , Ju-Jun Xie , Eulogio Oset

We adopt a novel formalism for the low-energy analysis of the $\gamma p \to K^{+}\pi\Sigma$ photoproduction reaction to calculate the $\pi\Sigma$ invariant mass distributions in the $\Lambda(1405)$ resonance region. The approach adheres to…

Nuclear Theory · Physics 2022-06-20 P. C. Bruns , A. Cieplý , M. Mai

A $\Sigma^*$ resonance with spin-parity $J^P = 1/2^-$ and mass in the vicinity of the $\bar{K}N$ threshold has been predicted in the unitary chiral approach and inferred from the analysis of CLAS data on the $\gamma p \to K^+ \pi^0…

High Energy Physics - Phenomenology · Physics 2019-04-17 Ju-Jun Xie , Eulogio Oset

We employed the chiral unitarity approach to investigate the decay process $\Xi_c^+ \to \Sigma^+K^+K^-$, by considering that the low lying nucleon resonance $\Xi(1/2^-)$ and the low lying scalar meson $f_0(980)$ and $a_0(980)$ that could be…

High Energy Physics - Phenomenology · Physics 2026-03-27 Ruitian Li , Xuan Luo , Hao Sun
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