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Chinese Physics C > 2025, Vol. 49 > Issue(9): 093107 DOI: 10.1088/1674-1137/ade4a2

A unitary coupled-channel approach toJ/ψradiative decay to pseudoscalar pairs

  • 1.

    Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

  • 2.

    University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China

  • 3.

    Southern Center for Nuclear-Science Theory (SCNT), Institute of Modern Physics, Chinese Academy of Sciences, Huizhou 516000, China

  • We present a comprehensive theoretical approach for describing the amplitude of the processes $ J/\psi \to \gamma ab $ , where aand bare pseudoscalar mesons. Our approach systematically incorporates final-state rescattering between the pseudoscalar pair $ ab $ , contributions from intermediate resonances, and coupled-channel effects via rescattering of awith an intermediate state $ \bar{X} $ (which subsequently decays to $ \gamma b $ ). This formalism ensures unitarity in the two-body rescattering amplitude and dynamically dressed couplings between resonances and the pseudoscalar pair. Using a toy model, we perform numerical calculations and demonstrate that coupled-channel effects significantly influence the lineshape of the invariant mass spectrum of the final states. These findings highlight the necessity of including coupled-channel dynamics in interpretations of $ J/\psi $ radiative decays.
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  • References

    [1] P. A. Zylaet al. (Particle Data Group), Prog. Theor. Exp. Phys.2020, 083C01 (2020) doi:10.1093/ptep/ptaa104
    [2] A. Esposito, A. Pilloni, and A. Polosa, Phys. Rep.668, 1 (2017) doi:10.1016/j.physrep.2016.11.002
    [3] M. Albaladejo, M. Battaglieri, L. Bibrzyckiet al.,Snowmass white paper: Need for amplitude analysis in the discovery of new hadrons, (2022), arXiv: 2203.08208 [hep-ph]
    [4] S. X. Nakamura, Q. Huang, J. J. Wuet al., Phys. Rev. D107, L091505 (2023) [Erratum: Phys. Rev. D109, 039901 (2024)], arXiv: 2212.07904 [hep-ph]
    [5] I. Aitchison, Nucl. Phys. A189, 417 (1972) doi:10.1016/0375-9474(72)90305-3
    [6] H. Kamano, S. X. Nakamura, T. S. H. Leeet al., Phys. Rev. C94, 015201 (2016), arXiv: 1605.00363[nucl-th] doi:10.1103/PhysRevC.94.015201
    [7] I. Denisenko, A. V. Anisovich, V. Credeet al., Phys. Lett. B755, 97 (2016), arXiv: 1601.06092[nucl-ex] doi:10.1016/j.physletb.2016.01.061
    [8] Y. F. Wang, EPJ Web Conf291, 02004 (2024), arXiv: 2401.01186[nucl-th] doi:10.1051/epjconf/202429102004
    [9] M. Ablikimet al., Phys. Rev. D92, 052003 (2015) doi:10.1103/physrevd.92.052003
    [10] M. Ablikimet al., Phys. Rev. D98, 072003 (2018) doi:10.1103/physrevd.98.072003
    [11] A. Rodaset al. (JPAC Collaboration),Scalar and tensor resonances inj/ψradiative decays, (2021), arXiv: 2110.00027 [hep-ph]
    [12] A. V. Sarantsev and E. Klempt, Int. J. Mod. Phys. A39, 2450096 (2024) doi:10.1142/S0217751X24500969
    [13] A. Matsuyama, T. Sato, and T. S. H. Lee, Phys. Rept.439, 193 (2007), arXiv: nucl-th/0608051 doi:10.1016/j.physrep.2006.12.003
    [14] S. X. Nakamura, Q. Huang, J. J. Wuet al., Phys. Rev. D109, 014021 (2024), arXiv: 2311.05391[hep-ph] doi:10.1103/PhysRevD.109.014021
    [15] S. X. Nakamura and J. J. Wu,Pole determination ofpψsλ(4338) and possiblepψsλ(4255) inb-→J/ψλp(2023), arXiv: 2208.11995 [hep-ph]
    [16] C. D. Abell, D. B. Leinweber, Z. W. Liuet al., Phys. Rev. D108, 094519 (2023), arXiv: 2306.00337[hep-lat] doi:10.1103/PhysRevD.108.094519
    [17] S. He, X. Feng, and C. Liu, JHEP2005, 011 (2005) doi:10.1088/1126-6708/2005/07/011
    [18] B. S. Zou and D. V. Bugg,Covariant tensor formalism for partial wave analyses of psi decay to mesons, (2002), arXiv: 0211457[hep-ph]
    [19] J. J. Wu, T. S. H. Leeet al., Phys. Rev. C85, 044002 (2012), arXiv: 1202.1036[nucl-th] doi:10.1103/PhysRevC.85.044002
    [20] S. Willenbrock,Mass and width of an unstable particle, (2024), arXiv: 2203.11056[hep-ph]

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Yang-hong Lu, Jia-jun Wu, Bei-jiang Liu and Xiao-yan Shen. An Unitary Coupled-Channel Approach to J/ ψRadiative decay to Pseudoscalar Pairs[J]. Chinese Physics C. doi: 10.1088/1674-1137/ade4a2
Yang-hong Lu, Jia-jun Wu, Bei-jiang Liu and Xiao-yan Shen. An Unitary Coupled-Channel Approach to J/ ψRadiative decay to Pseudoscalar Pairs[J]. Chinese Physics C. doi:10.1088/1674-1137/ade4a2 shu
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Received: 2025-04-21
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    A unitary coupled-channel approach toJ/ψradiative decay to pseudoscalar pairs

      Corresponding author:Yang-hong Lu,yhlu@ihep.ac.cn
    • 1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
    • 2. University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
    • 3. Southern Center for Nuclear-Science Theory (SCNT), Institute of Modern Physics, Chinese Academy of Sciences, Huizhou 516000, China
    • Received Date:2025-04-21
    • Available Online:2025-09-15

      Abstract:We present a comprehensive theoretical approach for describing the amplitude of the processes $ J/\psi \to \gamma ab $ , whereaandbare pseudoscalar mesons. Our approach systematically incorporates final-state rescattering between the pseudoscalar pair $ ab $ , contributions from intermediate resonances, and coupled-channel effects via rescattering ofawith an intermediate state $ \bar{X} $ (which subsequently decays to $ \gamma b $ ). This formalism ensures unitarity in the two-body rescattering amplitude and dynamically dressed couplings between resonances and the pseudoscalar pair. Using a toy model, we perform numerical calculations and demonstrate that coupled-channel effects significantly influence the lineshape of the invariant mass spectrum of the final states. These findings highlight the necessity of including coupled-channel dynamics in interpretations of $ J/\psi $ radiative decays.

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