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Pinpointing physical solutions in Y(4230) decays

Jie Yuan1,2, Yadi Wang1, and Kai Zhu2

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Phys. Rev. D 112, 116005 – Published 5 December, 2025

DOI: https://doi.org/10.1103/53ct-3nhw

Abstract

To resolve ambiguities from multiple solutions in experimental measurements, we construct a χ2 function incorporating constraints such as isospin conservation and amplitude relations. By minimizing the global χ2, we identify physical solutions for seven hidden-charm decay channels of Y(4230). Crucially, the physical solution for Y(4230)→π+π−J/ψ corresponds to the largest among four experimental solutions, potentially modifying inputs for theoretical calculations. Additionally, we predict ΓeeB(Y(4230)→π+π−ψ′) based on our results, acknowledging substantial uncertainties in current measurements.

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Phys. Rev. D 112, 116005– Published 5 December, 2025
  • Received 26 August 2025
  • Accepted 19 November 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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