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Production mechanism of hidden-charm pentaquark states Pcc¯s with strangeness S=−1

Samson Clymton1,2,*, Hyun-Chul Kim1,3,†, and Terry Mart4,‡

  • *Contact author: samson.clymton@apctp.org
  • †Contact author: hchkim@inha.ac.kr
  • ‡Contact author: terry.mart@sci.ui.ac.id
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Phys. Rev. D 112, 014041 – Published 28 July, 2025

DOI: https://doi.org/10.1103/2wvg-jlxp

Abstract

We investigate the hidden-charm pentaquark states with strangeness S=−1 (Pcc¯s) within an off shell coupled-channel approach based on effective Lagrangians that respect heavy-quark spin symmetry, SU(3) flavor symmetry, and hidden local symmetry. All relevant meson-baryon two-body channels composed of low-lying anticharmed mesons and singly charmed baryons with S=−1, as well as the J/ψΛ channel, are included. We find a total of 11 negative-parity states and three positive-parity states. Among the negative-parity states, the Pcc¯s(4338) and Pcc¯s(4459) can possibly be interpreted as D¯Ξc and D¯*Ξc molecular states, respectively. We identify a second state, Pcc¯s(4472), located close to the Pcc¯s(4459) but with different spin and width, which may correspond to the structure observed by the Belle Collaboration. Both states are generated from the D¯*Ξc channel and can be interpreted as spin partners. Their properties are consistent with recent experimental observations, providing strong support for the molecular interpretation of the Pcc¯s states. We also observe a two-pole structure near the D¯s*Λc and D¯Ξc′ thresholds, and find virtual and resonance states in the D¯*Ξc′ channel depending on spin-parity.

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Phys. Rev. D 112, 014041– Published 28 July, 2025
  • Received 11 April 2025
  • Accepted 24 June 2025
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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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