Investigations on the low-lying cccqq̅ resonances in a constituent quark model

Abstract

In present work, mass spectrum of the low-lying cccqq̅ pentaquarks states with qq̅=uu̅, dd̅ and ss̅, are investigated employing a constituent quark model, within which the spin-dependent hyperfine interactions are taken to be the instanton-induced interaction and the one-gluon-exchange interaction, respectively. The model parameters are fixed by fitting the mass spectrum of the relative qq̅ and qqq traditional hadrons. The numerical results show that energies for all the obtained states in the two employed models are higher than corresponding meson-baryon channels, consequently, we roughly estimate strong decays of these states using a simple quark rearrangement model, the corresponding partial width ratios for different decay channels are presented.

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BibTeX RIS

BibTeX

@misc{yin2026investigations,
  title = {{Investigations on the low-lying $cccq\barq$ resonances in a constituent quark model}},
  author = {Yue-Mei Yin and mao-jun Yan and Chun-Sheng An and Cheng-Rong Deng},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.05872},
  eprint = {2611.05872},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.05872},
  note = {CC BY 4.0},
}

RIS

TY  - UNPB
TI  - Investigations on the low-lying cccqq̅ resonances in a constituent quark model
AU  - Yue-Mei Yin
AU  - mao-jun Yan
AU  - Chun-Sheng An
AU  - Cheng-Rong Deng
PY  - 2026
DA  - 2026/11/04
PB  - arXiv
DO  - 10.48550/arxiv.2611.05872
UR  - https://arxiv.org/abs/2611.05872
AB  - In present work, mass spectrum of the low-lying cccqq̅ pentaquarks states with qq̅=uu̅, dd̅ and ss̅, are investigated employing a constituent quark model, within which the spin-dependent hyperfine interactions are taken to be the instanton-induced interaction and the one-gluon-exchange interaction, respectively. The model parameters are fixed by fitting the mass spectrum of the relative qq̅ and qqq traditional hadrons. The numerical results show that energies for all the obtained states in the two employed models are higher than corresponding meson-baryon channels, consequently, we roughly estimate strong decays of these states using a simple quark rearrangement model, the corresponding partial width ratios for different decay channels are presented.
ER  -

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