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Spectroscopy and decay properties of excited charmonium states

Zi-Yue Cui1,2, Hao Chen1,7,*, Cheng-Qun Pang3,4,6,†, and Zhi-Feng Sun2,5,6,‡

  • 1College of Physics and Electronic Information Engineering, Qinghai Normal University, Xining 810000, China
  • 2School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 3School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264000, China
  • 4Joint Research Center for Physics, Lanzhou University and Qinghai Normal University, Xining 810000, China
  • 5Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, Gansu 730000, China
  • 6Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, and Key Laboratory of Quantum Theory and Applications of the Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • 7Academy of Plateau Science and Sustainability, Xining 810016, China

  • *Contact author: chenhao_qhnu@outlook.com
  • †Contact author: xuehua45@163.com
  • ‡Contact author: sunzf@lzu.edu.cn
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Phys. Rev. D 112, 056026 – Published 22 September, 2025

DOI: https://doi.org/10.1103/ngwd-1bjs

Abstract

In this work, we investigate the mass spectra of excited charmonia employing a nonrelativistic potential model with screening effect and analyze their two-body strong decays, two-photon decays, leptonic decays, and hadronic transitions. Especially, we find that the newly observed resonances X(4160), Y(4500), and Y(4710) can be identified as 33P0, 33D1, and 43D1 states, respectively. We also predict the masses and the widths of higher excited states in the charmonia family.

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Phys. Rev. D 112, 056026– Published 22 September, 2025
  • Received 12 June 2025
  • Accepted 29 August 2025
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