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Strangeonium spectrum with screening effects and interpretation of $h_{1} (1911)$ and $X (2300)$ observed by BESIII

Wei Hao ^1,*, M. Atif Sultan^2,3,†, Li-Juan Liu^1,‡, and En Wang^1,§

¹School of Physics, Zhengzhou University, Zhengzhou 450001, China
²School of Physics, Nankai University, Tianjin 300071, China
³Centre for High Energy Physics, University of the Punjab, Lahore 54590, Pakistan

^*Contact author: haowei@nankai.edu.cn
^†Contact author: atifsultan.chep@pu.edu.pk
^‡Contact author: liulijuan@zzu.edu.cn
^§Contact author: wangen@zzu.edu.cn

Phys. Rev. D 112, 036006 – Published 13 August, 2025

DOI: https://doi.org/10.1103/yqxf-5scf

Abstract

Motivated by two new states $h_{1} (1911)$ and $X (2300)$ observed by BESIII, we have investigated the mass spectrum and the strong decay properties of the strangeonium mesons within the modified Godfrey-Isgur model by considering the screening effects. We have determined the free parameters using the masses and widths of the well-established $s \bar{s}$ states $ϕ (1020)$ , $ϕ (1680)$ , $h_{1} (1415)$ , $f_{2}^{'} (1525)$ , and $ϕ_{3} (1850)$ . According to our results, $h_{1} (1911)$ and $X (2300)$ could be well explained as $h_{1} (2^{1} P_{1})$ and $h_{1} (3^{1} P_{1})$ $s \bar{s}$ states, respectively. Meanwhile, the possible assignments of $X (2000)$ , $η_{2} (1870)$ , and $ϕ (2170)$ as $3^{3} S_{1}$ , $1^{1} D_{2}$ , and $2^{3} D_{1}$ are also discussed. Furthermore, the masses and widths of the $2 S$ , $3 S$ , $1 P$ , $2 P$ , $3 P$ , $1 D$ , and $2 D$ $s \bar{s}$ states are also given and compared with various theoretical predictions, which will be helpful for the observations and confirmations of these states in the future.

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Phys. Rev. D 112, 036006– Published 13 August, 2025

Vol. 112, Iss. 3 — 1 August 2025

Received 18 December 2024
Accepted 16 July 2025

DOI: https://doi.org/10.1103/yqxf-5scf

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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Strangeonium spectrum with screening effects and interpretation of $h_{1} (1911)$ and $X (2300)$ observed by BESIII

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Strangeonium spectrum with screening effects and interpretation of h1(1911) and X(2300) observed by BESIII

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References (90)

Strangeonium spectrum with screening effects and interpretation of $h_{1} (1911)$ and $X (2300)$ observed by BESIII