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arXiv · 2505.14324

Holographic quark masses and radiative decays of heavy vector mesons

Saulo Diles·Miguel Angel Martin Contreras·Alfredo Vega
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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 non-relativistic approximation. By applying the Segre formula from non-relativistic 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 AdS/QCD.

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Saulo Diles, Miguel Angel Martin Contreras, Alfredo Vega. 2025-05-20. Holographic quark masses and radiative decays of heavy vector mesons. https://doi.org/10.1103/7dc8-kw2j

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