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  • Open Access

Study of the hidden-heavy pentaquarks and Pcs states

Wen-Xuan Zhang1,†, Chang-Le Liu1,‡, and Duojie Jia1,2,3,*

  • *Corresponding author: jiadj@nwnu.edu.cn
  • †zhangwx89@outlook.com
  • ‡liuchanglelcl@qq.com
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Phys. Rev. D 109, 114037 – Published 24 June, 2024

DOI: https://doi.org/10.1103/PhysRevD.109.114037

Abstract

Inspired by the recently observed resonance states PψsΛ(4338)0 and Pcs(4459)0 by LHCb Collaboration in J/ψΛ decay channel, we perform a systematical study of all possible hidden-heavy pentaquarks with strangeness S=0,−1,−2,−3, in unified framework of MIT bag model. The color-spin wave functions in terms of Young-Yamanouchi bases and transformed into baryon-meson couplings are utilized to calculate masses, magnetic moments, and relative partial widths of the hidden-heavy pentaquarks, suggesting that the observed PψsΛ(4338)0 is likely to be a 1/2− compact Pcs pentaquark, and the Pcs(4459)0 favors two-peak structure of 3/2− and 1/2− Pcs states. Our computation indicates that hidden-heavy pentaquarks have the masses around 4.35–4.90 GeV for the Pcs, 11.21–11.67 GeV for the Pbs, 4.73–5.02 GeV for the Pcss, and 11.54–11.77 GeV for the Pbss.

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Phys. Rev. D 109, 114037– Published 24 June, 2024
  • Received 22 December 2023
  • Accepted 16 May 2024
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