Analysis of the doubly radiative decays $\eta^{(\prime)}\to\pi^0\gamma\gamma$ and $\eta^\prime\to\eta\gamma\gamma$ (15-1-9)
Pre-published on:
February 06, 2024
Published on:
March 07, 2024
Abstract
We study the doubly radiative decays $\eta^{(\prime)}\to\pi^0\gamma\gamma$ and $\eta^\prime\to\eta\gamma\gamma$ in terms of vector and scalar meson exchange contributions using, respectively, the frameworks of Vector Meson Dominance and the Linear Sigma model.
Predictions for the $m_{\gamma\gamma}^{2}$ invariant mass distribution and branching ratios are given, and a discussion of how they compare to experimental data is carried out.
DOI: https://doi.org/10.22323/1.413.0028
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