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arXiv · 2110.00027

Scalar and tensor resonances in $J/\psi$ radiative decays

JPAC Collaboration·A. Rodas·A. Pilloni·M. Albaladejo·C. Fernandez-Ramirez·V. Mathieu·A. P. Szczepaniak
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Abstract

We perform a systematic analysis of the $J/\psi \to \gamma \pi^0\pi^0$ and $\to \gamma K_S^0 K_S^0$ partial waves measured by BESIII. We use a large set of amplitude parametrizations to reduce the model bias. We determine the physical properties of seven scalar and tensor resonances in the 1-2.5 GeV mass range. These include the well known $f_0(1500)$ and $f_0(1710)$, that are considered to be the primary glueball candidates. The hierarchy of resonance couplings determined from this analysis favors the latter as the one with the largest glueball component.

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JPAC Collaboration, A. Rodas, A. Pilloni, M. Albaladejo, C. Fernandez-Ramirez, V. Mathieu, A. P. Szczepaniak. 2021-09-30. Scalar and tensor resonances in $J/\psi$ radiative decays. https://arxiv.org/abs/2110.00027

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