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Branching fraction of Ξbc+→Ξc+J/ψ in the final-state-interaction approach

Xiao-Hui Hu1,2, Cai-Ping Jia3,*, Ye Xing1, and Fu-Sheng Yu4

  • 1The College of Materials and Physics, China University of mining and technology, Xuzhou 221116, China
  • 2Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MoE, Gansu Provincial Research Center for Basic Disciplines of Quantum Physics, Lanzhou University, Lanzhou 730000, China
  • 3Center for High Energy Physics, Peking University, Beijing 100871, China
  • 4Frontiers Science Center for Rare Isotopes, and School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China

  • *Contact author: jiacp@pku.edu.cn
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Phys. Rev. D 113, 056003 – Published 2 March, 2026

DOI: https://doi.org/10.1103/3hh2-q8qj

Abstract

The process of Ξbc+→Ξc+J/ψ is among the most favored modes for searching for bottom-charm baryons. However, its branching fraction has never been studied in theory. In this work, we investigate the branching fraction of Ξbc+→Ξc+J/ψ in the final-state-interaction approach, as it is dominated by the color-suppressed nonfactorizable contributions. A similar process, Λb0→Λ0J/ψ, is used as a control mode to fix the model parameter. Consequently, the branching fraction of Ξbc+→Ξc+J/ψ is predicted to be (1.55−0.42+0.50)×10−4. With the production rate of bottom-charm baryons and the detection efficiencies of the final states, it is expected for considerable signal events to observe Ξbc+ in the near future.

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Phys. Rev. D 113, 056003– Published 2 March, 2026
  • Received 11 December 2025
  • Accepted 5 February 2026
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