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Axial charges and magnetic moments of the decuplet pentaquark family

School of Physics, Northwest University, Xi’an 710127, China, Shaanxi Key Laboratory for Theoretical Physics Frontiers, Xi’an 710127, China, and Peng Huanwu Center for Fundamental Theory, Xi’an 710127, China

^*Contact author: haosongli@nwu.edu.cn

Phys. Rev. D 113, 056017 – Published 19 March, 2026

DOI: https://doi.org/10.1103/32n9-j3pp

Abstract

We present a systematic calculation of the axial charges and magnetic moments for the decuplet of hidden-charm molecular pentaquarks within the framework of the constituent quark model. Our findings reveal that the axial charges of these states are comparable in magnitude to that of the nucleon. Furthermore, we find that their magnetic moments obey a set of sum rules which hold for states sharing the same spin-flavor configuration, even in the presence of SU(3) flavor symmetry breaking. These results provide crucial insights into the internal structure and dynamics of multiquark hadrons, offering valuable guidance for future experimental and theoretical investigations, $μ_{P_{ψ}^{Δ +}} - μ_{P_{ψ}^{Δ 0}} + μ_{P_{ψ s}^{Σ -}} - μ_{P_{ψ s}^{Σ +}} + μ_{P_{ψ s s}^{N 0}} - μ_{P_{ψ s s}^{N -}} = 0, μ_{P_{ψ}^{Δ + +}} + μ_{P_{ψ}^{Δ -}} + μ_{P_{ψ s s s}^{Λ -}} = 3 μ_{P_{ψ s}^{Σ 0}}$ .

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Phys. Rev. D 113, 056017– Published 19 March, 2026

Vol. 113, Iss. 5 — 1 March 2026

Received 18 November 2025
Accepted 4 March 2026

DOI: https://doi.org/10.1103/32n9-j3pp

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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Axial charges and magnetic moments of the decuplet pentaquark family

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