Study of the $f_2(1270)$, $f'_2(1525)$, $\bar{K}^*_{2}(1430)$, $f_0(1370)$ and $f_0(1710)$ production from $\psi (nS)$ and $\Upsilon (nS)$ decays

TL;DR

This paper analyzes the production of specific tensor and scalar mesons from $$ and $$ decays, compares with experimental data, and predicts radiative decay rates for future validation.

Contribution

It extends previous decay analyses to $$ and $$ and provides new predictions for radiative decay rates involving these mesons.

Findings

Agreement with eight experimental decay rate ratios

Identification of one case with experimental discrepancies

Predictions for $$ radiative decays

Abstract

Based on previous studies that support the important role of the $f_2(1270)$, $f'_2(1525)$, and $\bar{K}^{*}_{2}(1430)$ resonances in the $J/\psi [\psi(2S)] \to \phi (\omega) VV$ decays, we make an analysis of the analogous decays of $\Upsilon (1S)$ and $\Upsilon (2S)$, taking into account recent experimental data. In addition, we study the $J/\psi$ and $\psi(2S)$ radiative decays and we also made predictions for the radiative decay of $\Upsilon(1S)$ and $\Upsilon(2S)$ into $\gamma f_2(1270)$, $\gamma f'_2(1525)$, $\gamma f_0(1370)$ and $\gamma f_0(1710)$, comparing with the recent results of a CLEO experiment. We can compare our results for ratios of decay rates with eight experimental ratios and find agreement in all but one case, where experimental problems are discussed.