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arxiv: 2603.22082 · v4 · pith:OI6STRSSnew · submitted 2026-03-23 · ✦ hep-ex

Mini-review of charmonium weak decays at BESIII

Xuze Li , Kaixin Fan , Zhengyun You , Yu Zhang , Minggang Zhao This is my paper

Pith reviewed 2026-05-21 10:50 UTC · model grok-4.3

classification ✦ hep-ex
keywords charmonium weak decaysBESIII experimentJ/ψ decaysψ(2S) decaysflavor-changing neutral currentsupper limitsrare decaysStandard Model tests
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The pith

BESIII sets the most stringent upper limits on multiple charmonium weak decay channels using its record dataset.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

This mini-review compiles the latest BESIII results on rare weak decays of J/ψ and ψ(2S) states. The experiment exploits data samples exceeding 10^10 J/ψ events and 2.7×10^9 ψ(2S) events to reach new sensitivity levels in channels that are heavily suppressed in the Standard Model. The paper reports upper limits on semileptonic, nonleptonic, and flavor-changing neutral-current modes, with no signals observed. These constraints test nonperturbative QCD dynamics and limit possible contributions from physics beyond the Standard Model in the charm sector.

Core claim

The BESIII experiment has leveraged its large data samples to establish leading experimental upper limits on various charmonium weak decays, including those suppressed by the Standard Model such as flavor-changing neutral currents, thereby providing constraints on nonperturbative QCD effects and potential new physics.

What carries the argument

The unprecedented data sample of over 10^10 J/ψ and 2.7×10^9 ψ(2S) events analyzed at the BESIII detector to search for rare weak decay signatures.

If this is right

  • The limits constrain possible new physics effects in flavor-changing neutral-current processes within the charm sector.
  • The results provide tests of nonperturbative QCD predictions for heavy quarkonium decay dynamics.
  • Absence of signals aligns with Standard Model expectations of strong suppression for these weak modes.
  • Tighter bounds from continued data taking can further restrict beyond-Standard-Model scenarios.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • Persistent limits could motivate analogous searches in bottomonium or other heavy meson systems to compare suppression patterns.
  • These constraints may intersect with neutrino sector studies if new physics links charm decays to lepton flavor violation.
  • Future facilities with even larger samples could convert some upper limits into positive observations if rates are enhanced.

Load-bearing premise

The review assumes that background subtraction, efficiency corrections, and systematic uncertainty evaluations in the underlying BESIII analyses are sufficiently robust to support the quoted upper limits without hidden biases.

What would settle it

An independent measurement or future dataset revealing a decay rate exceeding any of the reported upper limits in the reviewed channels would falsify the current constraints.

Figures

Figures reproduced from arXiv: 2603.22082 by Kaixin Fan, Minggang Zhao, Xuze Li, Yu Zhang, Zhengyun You.

Figure 1
Figure 1. Figure 1: Tree-level Feynman diagram for charmonium [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: Tree-level Feynman diagram for charmonium [PITH_FULL_IMAGE:figures/full_fig_p003_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: Feynman diagram for charmonium FCNC decay [PITH_FULL_IMAGE:figures/full_fig_p004_3.png] view at source ↗
read the original abstract

The weak decays of charmonium states such as $J/\psi$ and $\psi(2S)$ are instrumental in probing both nonperturbative QCD dynamics and the flavor structure of the Standard Model (SM). The extreme rarity of charmonium weak decays renders them highly sensitive to physics beyond the SM, particularly in channels that are heavily suppressed in the SM, such as flavor-changing neutral-current (FCNC) decays. This review highlights the critical role of the BESIII experiment, which leverages an unprecedented data sample of over $10^{10}$ $J/\psi$ and $2.7\times10^{9}$ $\psi(2S)$ events to achieve leading sensitivity in searches for charmonium weak decays. We present the latest and most stringent upper limits established by BESIII on various semileptonic, nonleptonic, and FCNC charmonium weak decay channels.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

0 major / 2 minor

Summary. This mini-review compiles and quotes the latest BESIII upper limits on rare weak decays of the J/ψ and ψ(2S) charmonium states. It covers semileptonic, nonleptonic, and FCNC channels, attributing leading experimental sensitivity to the large data samples of over 10^{10} J/ψ and 2.7×10^9 ψ(2S) events, which probe nonperturbative QCD and potential BSM effects.

Significance. If the quoted limits faithfully reflect the underlying peer-reviewed BESIII publications, the review offers a consolidated reference that facilitates comparison of current constraints on suppressed charmonium decays. Credit is given for its factual summary of existing results without new analyses or derivations, providing a useful snapshot for the community working on SM tests and new-physics searches.

minor comments (2)
  1. [Abstract] Abstract: the statement 'over 10^{10} J/ψ' would be clearer if the exact event yield or integrated luminosity corresponding to the quoted analyses were specified.
  2. [Throughout the manuscript] The review would benefit from a summary table listing all quoted upper limits together with their references and channels for quick reference.

Simulated Author's Rebuttal

0 responses · 0 unresolved

We thank the referee for the positive assessment of our mini-review and for recommending minor revision. The referee's summary accurately captures the scope and purpose of the manuscript. Since no specific major comments were provided in the report, we have no point-by-point responses to address. We will incorporate any minor editorial suggestions in the revised version.

Circularity Check

0 steps flagged

No significant circularity: factual compilation of prior results

full rationale

This is a mini-review paper that compiles and quotes upper limits from previously published BESIII analyses on charmonium weak decays. It introduces no new derivations, equations, predictions, or fitted parameters of its own. The central statements about data sample sizes and leading sensitivity reduce directly to accurate citation of independent, peer-reviewed experimental papers whose background modeling and systematics were already scrutinized externally. No self-definitional steps, fitted inputs renamed as predictions, or load-bearing self-citations that reduce the claim to unverified internal logic are present. The manuscript is self-contained as a summary.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

As a review summarizing published experimental limits, the paper introduces no new free parameters, axioms, or invented entities.

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Works this paper leans on

44 extracted references · 44 canonical work pages · 1 internal anchor

  1. [1]

    X. Q. Li, X. Liu, and Z. T. Wei. Charm physics: A field full with challenges and opportunities. Front. Phys. China, 4:49, 2009. doi:10.1007/s11467-009-0003-0

    work page doi:10.1007/s11467-009-0003-0 2009

  2. [2]

    H. B. Li and S. H. Zhu. Mini-review of rare charmonium decays at BESIII. Chin. Phys. C , 36:932, 2012. doi: 10.1088/1674-1137/36/10/003

    work page doi:10.1088/1674-1137/36/10/003 2012

  3. [3]

    Y. Meng, J. L. Dang, C. Liu, et al. First lattice QCD calculation of J/ ψ semileptonic decay containing D and Ds particles. Phys. Rev. D , 110(7):074510, 2024. doi: 10.1103/PhysRevD.110.074510

    work page doi:10.1103/physrevd.110.074510 2024

  4. [4]

    M. A. Sanchis-Lozano. On the search for weak decays of heavy quarkonium in dedicated heavy quark factories. Z. Phys. C , 62:271, 1994. doi:10.1007/BF01560243

    work page doi:10.1007/bf01560243 1994

  5. [5]

    Y. M. Wang, H. Zou, Z. T. Wei, et al. The Transition form-factors for semi-leptonic weak decays of J/ψ in QCD sum rules. Eur. Phys. J. C , 54:107, 2008. doi: 10.1140/epjc/s10052-007-0498-x

    work page doi:10.1140/epjc/s10052-007-0498-x 2008

  6. [6]

    Y. L. Shen and Y. M. Wang. J/ψ weak decays in the covariant light-front quark model. Phys. Rev. D , 78: 074012, 2008. doi:10.1103/PhysRevD.78.074012

    work page doi:10.1103/physrevd.78.074012 2008

  7. [7]

    Z. J. Sun, Z. Q. Zhang, Y. Y. Yang, et al. Semileptonic and nonleptonic weak decays of ψ(1S, 2S) and ηc(1S, 2S) to D(s) in the covariant light-front approach. Eur. Phys. J. C, 84(1):65, 2024. doi:10.1140/epjc/s10052-024-12404- 6

    work page doi:10.1140/epjc/s10052-024-12404- 2024

  8. [8]

    Dhir and R

    R. Dhir and R. C. Verma. Effects of Flavor Dependence on Weak Decays of J/ψ and Υ. Adv. High Energy Phys. , 2013:706543, 2013. doi:10.1155/2013/706543

    work page doi:10.1155/2013/706543 2013

  9. [9]

    M. A. Ivanov and C. T. Tran. Exclusive decays J/ψ→D(∗) (s) + in a covariant constituent quark model with infrared confinement. Phys. Rev. D , 92(7):074030, 2015. doi:10.1103/PhysRevD.92.074030

    work page doi:10.1103/physrevd.92.074030 2015

  10. [10]

    T. Wang, Y. Jiang, H. Yuan, et al. Weak decays of J/ψ and Υ(1S). J. Phys. G , 44(4):045004, 2017. doi: 10.1088/1361-6471/aa5f68

    work page doi:10.1088/1361-6471/aa5f68 2017

  11. [11]

    K. K. Sharma and R. C. Verma. Rare decays of Ψ and Υ. Int. J. Mod. Phys. A , 14:937, 1999. doi: 10.1142/S0217751X99000464

    work page doi:10.1142/s0217751x99000464 1999

  12. [12]

    R. C. Verma, A. N. Kamal, and A. Czarnecki. Hadronic weak decays of Ψ. Phys. Lett. B , 252:690, 1990. doi: 10.1016/0370-2693(90)90507-3

    work page doi:10.1016/0370-2693(90)90507-3 1990

  13. [13]

    Y. M. Wang, H. Zou, Z. T. Wei, et al. Weak decays of J/ψ: The Non-leptonic case. Eur. Phys. J. C , 55:607,

    work page

  14. [14]

    doi:10.1140/epjc/s10052-008-0619-1

    work page doi:10.1140/epjc/s10052-008-0619-1

  15. [15]

    J. Sun, Y. Yang, J. Huang, et al. Study of the ψ(1s, 2s) and ηc(1s, 2s) weak decays into dm. Adv. High Energy Phys., 2016:5071671, 2016. doi:10.1155/2016/5071671

    work page doi:10.1155/2016/5071671 2016

  16. [16]

    Y. M. Wang, H. Zou, Z. T. Wei, et al. Fcnc- induced semileptonic decays of j/psi in the standard model. J. Phys. G , 36:105002, 2009. doi:10.1088/0954- 3899/36/10/105002

    work page doi:10.1088/0954- 2009

  17. [17]

    Li and Z

    Z. Li and Z. You. Rare charm decays at besiii, 2024. URL https://arxiv.org/abs/2403.11597

    work page arXiv 2024

  18. [18]

    Datta, P

    A. Datta, P. J. O’Donnell, S. Pakvasa, et al. Flavor changing processes in quarkonium decays. Phys. Rev. D , 60:014011, 1999. doi:10.1103/PhysRevD.60.014011

    work page doi:10.1103/physrevd.60.014011 1999

  19. [19]

    Ablikim et al

    M. Ablikim et al. Design and Construction of the BESIII Detector. Nucl. Instrum. Meth. A , 614:345–399, 2010. doi:10.1016/j.nima.2009.12.050. (BESIII Collaboration)

    work page doi:10.1016/j.nima.2009.12.050 2010

  20. [20]

    BEPCII Performance and Beam Dynamics Studies on Luminosity

    Chenghui Yu et al. BEPCII Performance and Beam Dynamics Studies on Luminosity. In the proceedings of the 7th International Particle Accelerator Conference ,

    work page

  21. [21]

    doi:10.18429/JACoW-IPAC2016-TUYA01

    work page doi:10.18429/jacow-ipac2016-tuya01

  22. [22]

    Review of Particle Physics,

    M. Ablikim et al. Number of J/ψ events at BESIII. Chin. Phys. C , 46(7):074001, 2022. doi:10.1088/1674- 1137/ac5c2e. (BESIII Collaboration)

    work page doi:10.1088/1674- 2022

  23. [23]

    M. H. Liao et al. Experimental dataset from BESIII detector at Beijing electron–positron collider. Nucl. Sci. Tech., 36(11):218, 2025. doi:10.1007/s41365-025-01789-y

    work page doi:10.1007/s41365-025-01789-y 2025

  24. [24]

    Ablikim et al

    M. Ablikim et al. Determination of the number of ψ(3686) events taken at BESIII. Chin. Phys. C , 48(9): 8 093001, 2024. doi:10.1088/1674-1137/ad595b. (BESIII Collaboration)

    work page doi:10.1088/1674-1137/ad595b 2024

  25. [25]

    Ablikim et al

    M. Ablikim et al. Search for the rare semi-leptonic decay J/ψ → D−e+νe + c.c.. JHEP, (06):157, 2021. doi: 10.1007/JHEP06(2021)157. (BESIII Collaboration)

    work page doi:10.1007/jhep06(2021)157 2021

  26. [26]

    Binosi and L

    D. Binosi and L. Theußl. JaxoDraw: A Graph- ical user interface for drawing Feynman diagrams. Comput. Phys. Commun. , 161:76–86, 2004. doi: 10.1016/j.cpc.2004.05.001

    work page doi:10.1016/j.cpc.2004.05.001 2004

  27. [27]

    Navas, et al., Review of particle physics, Phys

    S. Navas et al. Review of particle physics. Phys. Rev. D , 110(3):030001, 2024. doi:10.1103/PhysRevD.110.030001. Particle Data Group

    work page doi:10.1103/physrevd.110.030001 2024

  28. [28]

    C. T. Hill. Topcolor assisted technicolor. Phys. Lett. B , 345:483, 1995. doi:10.1016/0370-2693(94)01660-5

    work page doi:10.1016/0370-2693(94)01660-5 1995

  29. [29]

    C. S. Aulakh and R. N. Mohapatra. Neutrino as the supersymmetric partner of the majoron. Phys. Lett. B , 119:136, 1982. doi:10.1016/0370-2693(82)90262-3

    work page doi:10.1016/0370-2693(82)90262-3 1982

  30. [30]

    S. L. Glashow and S. Weinberg. Natural conservation laws for neutral currents. Phys. Rev. D , 15:1958, 1977. doi:10.1103/PhysRevD.15.1958

    work page doi:10.1103/physrevd.15.1958 1958

  31. [31]

    Ablikim et al

    M. Ablikim et al. Search for the semi-muonic charmonium decay J/ψ → D−µ+νµ + c.c.. JHEP, (01):126, 2024. doi:10.1007/JHEP01(2024)126. (BESIII Collaboration)

    work page doi:10.1007/jhep01(2024)126 2024

  32. [32]

    Search for the charmonium semi-leptonic weak decay $J/\psi\rightarrow D_s^-e^+\nu_e+c.c.$

    M. Ablikim et al. Search for the charmonium semi- leptonic weak decay J/ψ → D− s e+νe + c.c., 2026. URL https://arxiv.org/abs/2510.25100. (BESIII Collaboration)

    work page internal anchor Pith review Pith/arXiv arXiv 2026

  33. [33]

    Ablikim et al

    M. Ablikim et al. Search for the weak decays J/ψ → D(∗) s eνe + c.c.. Phys. Rev. D , 90(11):112014, 2014. doi: 10.1103/PhysRevD.90.112014. (BESIII Collaboration)

    work page doi:10.1103/physrevd.90.112014 2014

  34. [34]

    Ablikim et al

    M. Ablikim et al. Search for the charmonium weak decays J/ψ → D− s ρ+ + c.c. and J/ψ → D− s π+ + c.c.. JHEP, (12):077, 2025. doi:10.1007/JHEP12(2025)077. (BESIII Collaboration)

    work page doi:10.1007/jhep12(2025)077 2025

  35. [35]

    Ablikim et al

    M. Ablikim et al. Search for J/ ψ weak decays containing a D meson. Phys. Rev. D , 110(3):032020, 2024. doi: 10.1103/PhysRevD.110.032020. (BESIII Collaboration)

    work page doi:10.1103/physrevd.110.032020 2024

  36. [36]

    Ablikim et al

    M. Ablikim et al. Search for the charmonium weak decay J/ψ → ¯D0 ¯K ∗0+c.c., 11 2025. URL https://arxiv.org/ abs/2511.16083. (BESIII Collaboration)

    work page arXiv 2025

  37. [37]

    Ablikim et al

    M. Ablikim et al. Search for the FCNC charmonium decay J/ ψ→ D0 µ+ µ-+ cc. JHEP, (04):061, 2025. doi: 10.1007/JHEP04(2025)061. (BESIII Collaboration)

    work page doi:10.1007/jhep04(2025)061 2025

  38. [38]

    Ablikim et al

    M. Ablikim et al. Search for the rare decays J/ψ → D0e+e− + c.c. and ψ(3686) → D0e+e− + c.c.. Phys. Rev. D , 96(11):111101, 2017. doi: 10.1103/PhysRevD.96.111101. (BESIII Collaboration)

    work page doi:10.1103/physrevd.96.111101 2017

  39. [39]

    Ablikim et al

    M. Ablikim et al. Search for the rare decay J/ψ→γD0+c.c. at BESIII. Phys. Rev. D, 110(11):112012,

    work page

  40. [40]

    (BESIII Collaboration)

    doi:10.1103/PhysRevD.110.112012. (BESIII Collaboration)

    work page doi:10.1103/physrevd.110.112012

  41. [41]

    Ablikim et al

    M. Ablikim et al. Search for the rare decay of ψ(3686) → Λ+ c pe+e− + c.c. at BESIII. Phys. Rev. D , 97(9):091102, 2018. doi:10.1103/PhysRevD.97.091102. (BESIII Collaboration)

    work page doi:10.1103/physrevd.97.091102 2018

  42. [42]

    Ablikim et al

    M. Ablikim et al. Search for the weak decay ψ(3686) → Λ+ c ¯Σ− + c.c. Chin. Phys. C , 47(1):013002, 2023. doi: 10.1088/1674-1137/ac9895. (BESIII Collaboration)

    work page doi:10.1088/1674-1137/ac9895 2023

  43. [43]

    H. W. Ke, Y. Z. Chen, and X. Q. Li. The decay rate of J/ψ to Λc + ¯Σ+ in SM and beyond. Chin. Phys. Lett. , 28:071301, 2011. doi:10.1088/0256-307X/28/7/071301

    work page doi:10.1088/0256-307x/28/7/071301 2011

  44. [44]

    X. C. Ai et al. Conceptual design report of the Super Tau-Charm Facility: the accelerator. Nucl. Sci. Tech. , 36(12):242, 2025. doi:10.1007/s41365-025-01833-x

    work page doi:10.1007/s41365-025-01833-x 2025