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B−→J/ψη′K− reaction and the Y(4710) and K0*(1430) contributions

Wen-Tao Lyu1, Man-Yu Duan2,1,3,*, De-Min Li1,†, Bing Wang1,‡, Dian-Yong Chen2,4,§, and En Wang1,∥

  • 1School of Physics, Zhengzhou University, Zhengzhou 450001, China
  • 2School of Physics, Southeast University, Nanjing 210094, China
  • 3Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna, 46071 Valencia, Spain
  • 4Lanzhou Center for Theoretical Physics, Lanzhou University, Lanzhou 730000, People’s Republic of China

  • *Contact author: duanmy@seu.edu.cn
  • †Contact author: lidm@zzu.edu.cn
  • ‡Contact author: bingwang@zzu.edu.cn
  • §Contact author: chendy@seu.edu.cn
  • ∥Contact author: wangen@zzu.edu.cn
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Phys. Rev. D 112, 074005 – Published 6 October, 2025

DOI: https://doi.org/10.1103/tjmy-73k4

Abstract

Motivated by the recent LHCb Collaboration analysis, we have investigated the process B−→J/ψη′K− by considering the contributions from the resonances Y(4710) and K0*(1430). Our results are in good agreement with the measured invariant mass distributions and the Dalitz plot of LHCb, which supports the existence of the K0*(1430) and the Y(4710) in the process B−→J/ψη′K−. Since the decay mode of Y(4710)→J/ψη′ is Okubo-Zweig-Iizuka suppressed for the charmonium state, the measurements of the B(Y(4710)→J/ψη′) through the process B−→J/ψη′K− or other processes is helpful to understanding the nature of the Y(4710). Thus, we advocate that Belle II and LHCb Collaborations could perform the more precise analysis to confirm the evidence of the Y(4710) state, which could be helpful to reduce the experimental uncertainties of its mass and width and to explore its nature.

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Phys. Rev. D 112, 074005– Published 6 October, 2025
  • Received 4 March 2025
  • Accepted 15 September 2025
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