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Light meson decays of $D$ wave charmonia

Xiao-Yu Qi ¹, Xing-Dao Guo², and Dian-Yong Chen ^1,3,*

¹School of Physics, Southeast University, Nanjing 210094, China
²College of Physics and New Energy, Xuzhou University of Technology, Xuzhou, 221111, China
³Lanzhou Center for Theoretical Physics, Lanzhou University, Lanzhou 730000, China

^*Contact author: chendy@seu.edu.cn

Phys. Rev. D 112, 054003 – Published 2 September, 2025

DOI: https://doi.org/10.1103/hdmz-b2xq

Abstract

Motivated by the large non- $D \bar{D}$ branching fraction of $ψ_{1} (3770)$ , we investigate the light meson decays of the $D$ -wave charmonia in the present work with the meson loop mechanism. With the parameter range determined by $ψ_{1} (3770) \to ϕ η$ , our estimations of the branching fractions of the light meson decays of $ψ_{1} (3770)$ are consistent with the estimations in the literature. As for $ψ_{2} (3823)$ , the partial widths of $K^{*} {\bar{K}}^{*}$ channel is estimated to be around 200 keV, which is the predominant light meson decay channel of $ψ_{2} (3823)$ . Our estimations also indicate that $K^{(*)} {\bar{K}}^{(*)}$ and $ρ π$ are the dominant light meson decay modes of $ψ_{3} (3842)$ , while $η_{c 2} (3822)$ dominantly decays into $ρ ρ$ , $K^{*} {\bar{K}}^{*}$ , $ω ω$ , and $ϕ ϕ$ .

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References (45)

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Phys. Rev. D 112, 054003– Published 2 September, 2025

Vol. 112, Iss. 5 — 1 September 2025

Received 9 May 2025
Accepted 12 August 2025

DOI: https://doi.org/10.1103/hdmz-b2xq

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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Light meson decays of $D$ wave charmonia

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Light meson decays of D wave charmonia

Abstract

Physics Subject Headings (PhySH)

Article Text

References (45)

Light meson decays of $D$ wave charmonia