Exotic hadrons: Rich structure of multiparticle state near thresholds


  • Yasuhiro Yamaguchi Department of Physics, Nagoya University


Hadrons are a composite state of the elementary particles, quarks and gluons, bound by the strong interactions, which is one of the interesting phenomena in the low-energy QCD. In the ordinary hadron picture, baryons and mesons have been described as a three-quark state and quark-antiquark state, respectively. In fact, nucleons (protons and neutrons) can be understood as uud and udd baryons. However, accelerator experiments have reported unexpected states called exotic hadrons. Their natures cannot be understood by the ordinary hadron picture. In this talk, we study the hidden-charm pentaquarks Pc and Pcs reported by the LHCb experiment recently. We have considered the hybrid model introducing the mixture of the hadronic molecule and compact multiquark state to study the pentaquark's energy spectra. We also discuss the role of the interactions in resonances obtained in this study.

About the Speaker

Yasuhiro Yamaguchi, Department of Physics, Nagoya University

Yasuhiro Yamaguchi is an Assistant Professor at the Department of Physics in Nagoya University, Japan. He obtained his Ph.D. degree from the Graduate School of Science, Department of Physics, Osaka University in 2014. He has previously held postdoctoral research positions at the Yukawa Institute for Theoretical Physics (YITP) in Kyoto University, Istituto Nazionale di Fisica Nucleare, Sezione di Genova (INFN Genova) in Italy, RIKEN Nishina Center in Japan, and the Advanced Science Research Center of the Japan Atomic Energy Agency.



Article ID



Invited Presentations



How to Cite

Y Yamaguchi, Exotic hadrons: Rich structure of multiparticle state near thresholds, Proceedings of the Samahang Pisika ng Pilipinas 41, SPP-2023-INV-2C-02 (2023). URL: https://proceedings.spp-online.org/article/view/SPP-2023-INV-2C-02.