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$Ξ_{c} (3055)$ as a scaling point to establish the excited $Ξ_{c}^{(')}$ family

Xiao-Huang Hu ^1,*, Zhe-Tao Miu^2,*, Zi-Xuan Ma^2,*, Qi Huang ^2,†, Yue Tan^3,‡, and Jia-Lun Ping^2,§

¹Department of Physics, Changzhou Institute of Industry Technology, Changzhou 213164, China
²Department of Physics and Technology, Nanjing Normal University, Nanjing 210023, China
³Department of Physics, Yancheng Institute of Technology, Yancheng 224000, China

^*These authors contributed equally to this work.
^†Contact author: 06289@njnu.edu.cn
^‡Contact author: tanyue@ycit.edu.cn
^§Contact author: jlping@njnu.edu.cn

Phys. Rev. D 114, 014038 – Published 20 July, 2026

DOI: https://doi.org/10.1103/62lj-n7qw

Abstract

The low-lying orbital excitations of $Ξ_{c}^{(')}$ baryons are studied within the chiral quark model combined with the ${}^{3}{P_{0}}$ decay mechanism. Motivated by the LHCb observation that $Ξ_{c} (3055)$ is a $λ$ -mode $1 D$ state with $J^{P} = 3 / 2^{+}$ , we take it as a reference to constrain model parameters and perform a systematic analysis of states below 3.1 GeV. Our results provide a consistent interpretation of the observed $Ξ_{c}$ spectrum: $Ξ_{c} (2790)$ and $Ξ_{c} (2815)$ are well described as a $λ$ -mode $1 P$ doublet, the structures around 2.9 GeV can be interpreted as $P$ -wave excitations with mixed $λ / ρ$ modes, and $Ξ_{c} (2970)$ is consistent with a $2 S$ assignment. Furthermore, $Ξ_{c} (3055)$ together with $Ξ_{c} (3080)$ forms a $λ$ -mode $D$ -wave doublet, while $Ξ_{c} (3123)$ favors a $1 D$ assignment. These results provide a coherent picture of the low-lying $Ξ_{c}$ spectrum and call for further experimental tests.

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Phys. Rev. D 114, 014038– Published 20 July, 2026

Vol. 114, Iss. 1 — 1 July 2026

Received 9 January 2026
Accepted 17 June 2026

DOI: https://doi.org/10.1103/62lj-n7qw

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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$Ξ_{c} (3055)$ as a scaling point to establish the excited $Ξ_{c}^{(')}$ family

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Ξc(3055) as a scaling point to establish the excited Ξc(′) family

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$Ξ_{c} (3055)$ as a scaling point to establish the excited $Ξ_{c}^{(')}$ family