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Abstract <p>Recently, the BABAR (in 2021), BESIII (in 2022), and LHCb (in 2023) Collaborations reported the observation of the <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(a_{0}(1710)\)</EquationSource> <!--NuclPhys2560216Afonin-m3--> </InlineEquation> resonance. This has sparked a lively debate in the literature about the nature of this possible isospin partner of <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(f_{0}(1710)\)</EquationSource> <!--NuclPhys2560216Afonin-m4--> </InlineEquation>, since the latter has long been regarded as the main candidate for the lightest glueball. We highlight the clear prediction of <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(a_{0}(1710)\)</EquationSource> <!--NuclPhys2560216Afonin-m5--> </InlineEquation> in 2007 within the Regge approach using the observed hydrogen-like degeneracy in the spectrum of light mesons. Our reanalysis of the data used shows that the prediction was reliable and thus indicates that <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(a_{0}(1710)\)</EquationSource> <!--NuclPhys2560216Afonin-m6--> </InlineEquation> and <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\(f_{0}(1710)\)</EquationSource> <!--NuclPhys2560216Afonin-m7--> </InlineEquation> are conventional quark–antiquark states.</p>

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The Experimental Observation of \({a_{0}(1710)}\): Long Awaited from Regge Approach

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • S. S. Afonin

摘要

Abstract

Recently, the BABAR (in 2021), BESIII (in 2022), and LHCb (in 2023) Collaborations reported the observation of the \(a_{0}(1710)\) resonance. This has sparked a lively debate in the literature about the nature of this possible isospin partner of \(f_{0}(1710)\) , since the latter has long been regarded as the main candidate for the lightest glueball. We highlight the clear prediction of \(a_{0}(1710)\) in 2007 within the Regge approach using the observed hydrogen-like degeneracy in the spectrum of light mesons. Our reanalysis of the data used shows that the prediction was reliable and thus indicates that \(a_{0}(1710)\) and \(f_{0}(1710)\) are conventional quark–antiquark states.