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Comprehensive study of hidden charm pentaquarks with an improved unitarization method

E. E. Garcia-Gonzales1, V. K. Magas1,2, and A. Ramos1,2

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Phys. Rev. D 114, 054024 – Published 14 September, 2026

DOI: https://doi.org/10.1103/bt8z-w12j

Abstract

This work investigates dynamically generated hidden-charm baryon resonances arising from meson-baryon interactions. Using the local hidden gauge formalism, we model the interaction via t-channel vector meson exchange and unitarize the amplitude using the Bethe-Salpeter equation. To address regularization issues, we propose a novel “hybrid loop function” scheme that eliminates the unphysical poles—common artifacts in cutoff or dimensional regularization—while keeping the predictions of physical states. Consequently, the model successfully reproduces six experimentally known hidden-charm pentaquarks as well as earlier theoretical results, and predicts new states in the S=−1,I=1 sector.

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Information

Phys. Rev. D 114, 054024– Published 14 September, 2026
  • Received 27 May 2026
  • Accepted 6 August 2026
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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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