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- W3174553204 abstract "Based on the one state assumption of $eta(1405)$ and $eta(1475)$, thus, $eta(1295)$ and $eta(1405/1475)$ are organized as the first radial excitations of $eta$ and $eta'$, respectively, we investigate the productions and radiative decays of these two states in $J/psito gammaeta_Xto gammagamma V$, where $eta_X$ stands for $eta(1295)$ and $eta(1405/1475)$ and $V$ for vector mesons $rho^0, omega, phi$. As we have learned from previous studies that the hadronic decays of these two states receive important contributions from the intermediate $bar{K}K^*+c.c.$ meson loops due to the triangle singularity mechanism, we show that some measurable effects can also arise from the $bar{K}K^*+c.c.$ meson loops in their radiative decays. Our calculation shows that the impact of the $bar{K}K^*+c.c.$ meson loops on the $eta(1405/1475)$ radiative decays is relatively smaller than on $eta(1295)$ since the latter has a much larger coupling to $bar{K}K^*+c.c.$ However, the production of $eta(1295)$ in the $J/psi$ radiative decays will be strongly suppressed. As a consequence of the $bar{K}K^*+c.c.$ meson loop contributions, we find that the mixing angle extracted in the radiative decays of $eta(1295)$ and $eta(1405/1475)$ will be different from each other, and both are different from the one determined in other processes." @default.
- W3174553204 created "2021-07-05" @default.
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- W3174553204 creator A5070046055 @default.
- W3174553204 date "2021-06-23" @default.
- W3174553204 modified "2023-09-23" @default.
- W3174553204 title "Hadronic loop effects on the radiative decays of the first radial excitations of $eta$ and $eta'$" @default.
- W3174553204 doi "https://doi.org/10.48550/arxiv.2106.12483" @default.
- W3174553204 hasPublicationYear "2021" @default.
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