Two-body strong decays of the Pcs(4338) as a hidden-charm pentaquark state via the QCD sum rules
Abstract
In this work, we study the hadronic coupling constants of the Pcs(4338) as a [us][dc]c̅−[ds][uc]c̅ type pentaquark state with the spin-parity JP=1/2- via the three-point QCD sum rules according to rigorous quark-hadron quality. We select the optimal parametrization to subtract contaminations from the higher resonances and continuum states and obtain ideal hadronic coupling constants therefore the partial decay widths and total width Γ(Pcs(4338))=10.48± 1.79 MeV, which are consistent with the experimental data Γ(Pcs(4338)) = 7.0±1.2±1.3 MeV from the LHCb collaboration. The partial decay widths have the hierarchy Γ(J/ψΛ)> Γ(D̅sΛc)> Γ(ηcΛ), which can be compared to the experimental data in the future to distinguish the pentaquark and molecule scenarios.
Related
- Analysis of the two-body strong decays of the hidden-charm pentaquark states in QCD sum rules
- Pion radiative decays of excited hidden-charm pentaquark molecules: from Σc(*)D̅(*)(2S) molecules to the reported Pc states
- Analysis of the hidden-charm pentaquark candidates in the J/ψΩ mass spectrum via the QCD sum rules
- Chiral mass corrections to decuplet hidden-charm pentaquark states
- Spectra and strong decays of open charm-bottom cb̅qq̅ tetraquarks in an unequal-mass Born-Oppenheimer framework
BibTeX
@misc{wang2026twobody,
title = {{Two-body strong decays of the $P_cs(4338)$ as a hidden-charm pentaquark state via the QCD sum rules}},
author = {Zhi-Gang Wang and Jia-Wei Zhu and Yang Liu},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.36861},
eprint = {2610.36861},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.36861},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Two-body strong decays of the P_cs(4338) as a hidden-charm pentaquark state via the QCD sum rules
AU - Zhi-Gang Wang
AU - Jia-Wei Zhu
AU - Yang Liu
PY - 2026
DA - 2026/10/27
PB - arXiv
DO - 10.48550/arxiv.2610.36861
UR - https://arxiv.org/abs/2610.36861
AB - In this work, we study the hadronic coupling constants of the P_cs(4338) as a [us][dc]c̅−[ds][uc]c̅ type pentaquark state with the spin-parity J^P=1/2^- via the three-point QCD sum rules according to rigorous quark-hadron quality. We select the optimal parametrization to subtract contaminations from the higher resonances and continuum states and obtain ideal hadronic coupling constants therefore the partial decay widths and total width Γ(P_cs(4338))=10.48± 1.79 MeV, which are consistent with the experimental data Γ(P_cs(4338)) = 7.0±1.2±1.3 MeV from the LHCb collaboration. The partial decay widths have the hierarchy Γ(J/ψΛ)> Γ(D̅_sΛ_c)> Γ(η_cΛ), which can be compared to the experimental data in the future to distinguish the pentaquark and molecule scenarios.
ER -