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arXiv · 2301.08532

Repercussion of the $a_0(1710)$ [$a_0(1817)$] resonance and future developments

E. Oset·L. R. Dai·L. S. Geng
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Abstract

In this paper, we discuss the significance and prospect for the newly discovered a0(1710)[a0(1817)] resonance state at BESIII experiment, in which they reported the observation of a scalar meson of spin-parity $J^P=0^+$ with isospin $I=1$, branded as $a_0(1817)$. This state may be the same particle as the $a_0(1710)$ observed by the BaBar experiment earlier. As early as 2008, we found that f0(1710) can be regarded as a $K^* \bar{K}^*$ molecular state based on the chiral unitary theory, and there is a partner state $a_0(1710)$ with an isospin $I=1$. Our theoretical prediction based on this picture is in good agreement with the latest BESIII data, which further supports the molecular state picture of $a_0(1710)[a_0(1817)]$. If it is indeed the isospin partner state of $f_0(1710)$, this would rule out $f_0(1710)$ as a glueball candidate. This paper briefly reviews the relevant theoretical studies and suggests new experiments to further examine the nature of $a_0(1710)[a_0(1817)]$.

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E. Oset, L. R. Dai, L. S. Geng. 2023-01-20. Repercussion of the $a_0(1710)$ [$a_0(1817)$] resonance and future developments. https://doi.org/10.1016/j.scib.2023.01.011

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