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An Assessment of Pseudoscalar and Vector Meson Electromagnetic Form Factors

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Abstract

Within the framework of the Dyson-Schwinger/Bethe-Salpeter equations of quantum chromodynamics, we investigate the electromagnetic form factors of pseudoscalar and vector mesons with different hidden-flavor, from light to heavy quark sectors, and compare the results with those of the single-pole vector meson dominance (VMD) model. It is found that the charge radius of vector meson is larger than that of its pseudoscalar counterpart. As the current-quark mass increases, the electric form factor of the vector meson tends to approach that of its pseudoscalar counterpart, and gradually deviates from the prediction of the VMD model.

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Acknowledgements

This work has been partially funded by Ministerio Español de Ciencia e Innovación under grant No. PID2019-107844GB-C22; Junta de Andalucía under contract Nos. Operativo FEDER Andalucía 2014–2020 UHU-1264517, P18-FR-5057 and also PAIDI FQM-370.

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Authors and Affiliations

  1. Departamento de Ciencias Integradas, Centro de Estudios Avanzados en Física, Matemáticas y Computación, Facultad de Ciencias Experimentales, Universidad de Huelva, 21071, Huelva, Spain

    Yin-Zhen Xu

  2. Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, E-41013, Sevilla, Spain

    Yin-Zhen Xu & Jorge Segovia

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  1. Yin-Zhen Xu
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  2. Jorge Segovia
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Yin-Zhen Xu and Jorge Segovia wrote the main manuscript text and Yin-Zhen Xu prepared figures 1–3. All authors reviewed the manuscript

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Xu, YZ., Segovia, J. An Assessment of Pseudoscalar and Vector Meson Electromagnetic Form Factors. Few-Body Syst 64, 62 (2023). https://doi.org/10.1007/s00601-023-01845-6

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