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The BES data on the $J/\psi \to \eta K^{*0}\bar{K}^{*0}$ reaction show a clear enhancement in the $K^{*0}\bar{K}^{*0}$ mass distribution close to the threshold of this channel. Such an enhancement is usually a signature of a L=0 resonance…

High Energy Physics - Phenomenology · Physics 2015-06-16 Ju-Jun Xie , M. Albaladejo , E. Oset

The $\Lambda p$ interaction close to the $\Sigma N$ threshold is considered. Specifically, the pronounced structure seen in production reactions like $K^-d \to \pi^- \Lambda p$ and $pp\to K^+ \Lambda p$ around the $\Sigma N$ threshold is…

Nuclear Experiment · Physics 2015-06-12 H. Machner , J. Haidenbauer , F. Hinterberger , A. Magiera , J. A. Niskanen , J. Ritman , R. Siudak

A comprehensive analysis of all available data on cross sections and spin-dependent observables for the $\gamma p \to K^+ \Sigma^0(1385)$, $\gamma n \to K^+ \Sigma^-(1385)$, and $\pi^+ p \to K^+ \Sigma^+(1385)$ reactions is performed within…

High Energy Physics - Phenomenology · Physics 2025-03-21 Ai-Chao Wang , Neng-Chang Wei , Fei Huang

The $\gamma p \to K^+ \pi^0 \Lambda$ and $\gamma p \to K^+ \pi \Sigma $ reactions are studied in the kinematic region where the $\pi^0 \Lambda$(1116) and $\pi\Sigma$(1192) pairs originate dominantly from the decay of the $\Sigma$(1385) and…

Nuclear Theory · Physics 2010-12-16 Madeleine Soyeur , Matthias F. M. Lutz

Results for the reaction gamma p --> K+ Lambda, studied within a constituent quark model and a dynamical coupled-channel approach, are presented and compared with recent data. Issues related to the search for missing baryon resonances are…

Nuclear Theory · Physics 2016-08-16 B. Juliá-Díaz , B. Saghai , F. Tabakin , W. -T. Chiang , T. -S. H. Lee , Z. Li

Electromagnetic meson production formalisms are reviewed, with emphasise placed on their ability in search for new baryon resonances via gamma p -> K+ Lambda and gamma p -> eta p processes. The relevant studies, aiming to deepen our…

Nuclear Theory · Physics 2009-11-07 B. Saghai

In heavy ion collisions after the quark-gluon plasma there is a hadronic gas phase. Using effective Lagrangians we study the interactions of charmed mesons which lead to $J/\psi$ production and absorption in this gas. We update and extend…

High Energy Physics - Phenomenology · Physics 2018-04-11 L. M. Abreu , K. P. Khemchandani , A. Martínez Torres , F. S. Navarra , M. Nielsen

The interactions of $\bar{D}^{(*)} \Lambda_c - \bar{D}^{(*)}\Sigma_c^{(*)}$ are studied within the framework of a dynamical coupled-channel approach. A series of bound states and resonances with different spin and parity are dynamically…

High Energy Physics - Phenomenology · Physics 2022-06-08 Zheng-Li Wang , Chao-Wei Shen , Deborah Rönchen , Ulf-G. Meißner , Bing-Song Zou

For the study of the $\Sigma$ resonances, we analyze the differential cross sections and $\Lambda$ polarizations for the reactions $K^-n\to\pi^-\Lambda$ and $K^-p\to\pi^0\Lambda$ with an effective Lagrangian approach. Data of an early…

Nuclear Theory · Physics 2015-06-05 Puze Gao , Jun Shi , B. S. Zou

Meson-baryon interactions are the fundamental building blocks to study the structures of baryon resonances and meson properties in few-body nuclear systems. We review the recent progress in the investigation of the meson-baryon interaction…

Nuclear Theory · Physics 2011-08-31 Tetsuo Hyodo

The inclusive reaction $p A \to pK^0_s + X$ was studied at IHEP accelerator with $70 GeV$ proton beam using SVD-2 detector. Two different samples of $K^0_s$, statistically independent and belonging to different phase space regions were used…

High Energy Physics - Experiment · Physics 2012-08-27 SVD Collaboration

We conducted a theoretical study on the process $\Sigma^{+} p \to\Lambda a_0^{+} p$ based on an effective Lagrangian approach. This model encompasses the excitation of intermediate states leading to the production of $\Delta(1920)$ through…

High Energy Physics - Phenomenology · Physics 2024-10-18 Yan Dai , Aojia Xu , Gang Li , Mao Song , Xuan Luo

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 investigate the $\gamma p \to \phi K^+ \Lambda$ reaction near threshold within an effective Lagrangian approach and the isobar model. Various nucleon resonances caused by the $\pi$ and $\eta$ meson exchanges and background contributions…

Nuclear Theory · Physics 2015-12-02 Qi-Fang Lü , Rong Wang , Ju-Jun Xie , Xu-Rong Chen , De-Min Li

With an effective Lagrangian approach, we analyze the $K^-p\to \pi^0\Sigma^0$ reaction to study the $\Lambda$ hyperon resonances by fitting the Crystal Ball data on differential cross sections and $\Sigma^0$ polarization with the…

High Energy Physics - Phenomenology · Physics 2015-03-11 Jun Shi , Bing-Song Zou

The reaction mechanisms for $K\Sigma(1385)$ photoproduction from the reaction $\gamma p \to K^+\Sigma^{0}(1385)$ in the resonance energy region are investigated in a hadronic model. Both contributions from $N$ and $\Delta$ resonances of…

Nuclear Theory · Physics 2008-11-26 Yongseok Oh , Che Ming Ko , K. Nakayama

This work measured $d\sigma/d\Omega$ for neutral kaon photoproduction reactions from threshold up to a c.m.\ energy of 1855MeV, focussing specifically on the $\gamma p\rightarrow K^0\Sigma^+$, $\gamma n\rightarrow K^0\Lambda$, and $\gamma…

The Crystal Ball Collaboration has recently reported the differential cross sections and $\Lambda$ polarization for the reaction $K^-p\rightarrow \pi^0\Lambda$ using an incident $K^-$ beam with momenta between 514 and 750 MeV/$c$. We make a…

Nuclear Theory · Physics 2011-09-07 Puze Gao , B. S. Zou , A. Sibirtsev

The two-channel photoproductions of $\gamma p \to K^{*+} \Sigma^{0}$ and $\gamma p \to K^{*0} \Sigma^{+}$ are investigated based on an effective Lagrangian approach at the tree-level Born approximation. In addition to the $t$-channel $K$,…

Nuclear Theory · Physics 2018-10-29 A. C. Wang , W. L. Wang , F. Huang

The role of the $\Lambda(1670)$ resonance in the $\gamma p \to K^+ \eta \Lambda$ reaction near threshold is studied within an effective Lagrangian approach. We perform a calculation for the total and differential cross section of the…

Nuclear Theory · Physics 2015-12-08 Li-Ye Xiao , Qi-Fang Lü , Ju-Jun Xie , Xian-Hui Zhong