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  • Open Access

Holographic quark masses and radiative decays of heavy vector mesons

Saulo Diles*

Miguel Angel Martin Contreras†

Alfredo Vega‡

  • School of Nuclear Science and Technology, University of South China, No 28, West Changsheng Road, Hengyang City, Hunan Province, China and Key Laboratory of Advanced Nuclear Energy Design and Safety, Ministry of Education, 28 Changsheng West Road, Hengyang 421001, China

  • *Contact author: smdiles@ufpa.br
  • †Contact author: miguelangel.martin@usc.edu.cn
  • ‡Contact author: alfredo.vega@uv.cl
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Phys. Rev. D 112, 056010 – Published 11 September, 2025

DOI: https://doi.org/10.1103/7dc8-kw2j

Abstract

Holographic models of QCD provide the spectrum of heavy vector meson masses and electromagnetic decay constants through bulk computations of the current-current correlation function. Conversely, the phenomenology of heavy vector mesons is articulated by the constituent heavy quark model utilizing a nonrelativistic approximation. By applying the Segre formula from nonrelativistic quantum mechanics, we derive new observables from holography: the constituent quark mass, the three-photon decay width, the effective fine structure constant of the strong interaction, and the mixed one-photon and two-gluon decay width. We also derive the three-gluon decay width, the three-photon decay width, and the mixed one-photon and two-gluon decay width for the radially excited states of heavy quarkonia and compare them with available experimental data. The present results reveal a new paradigm of meson spectroscopy in anti-de-Sitter (AdS)/QCD.

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Phys. Rev. D 112, 056010– Published 11 September, 2025
  • Received 27 May 2025
  • Accepted 15 August 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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