Work

Comprehensive study of hidden charm pentaquarks with an improved unitarization method

Year: 2026

Type: article

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.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/bt8z-w12j

Authors: E. E. Garcia-Gonzales, V. K. Magas, A. Ramos

Institution: Universitat de Barcelona

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Ministerio de Ciencia e Innovación, Agencia Estatal de Investigación, Institut de Ciències del Cosmos

Awards: G225231157, G2680285269