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  • Analysis of the doubly radi...
    Gonzalez-Solis de la Fuente, Sergi; Escribano, Rafel; Royo, Emilio

    Pos : proceedings of science, 03/2024, Letnik: 413
    Journal Article

    We study the doubly radiative decays $η^{(')}$ → $π^0γγ$ and $η^{(')}$ → $ηγγ$ 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 ${m}_{γγ}^{2}$ invariant mass distribution and branching ratios are given, and a discussion of how they compare to experimental data is carried out.