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Vector meson dominance in $\eta'\rightarrow\pi^0\gamma\gamma$ decay

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arxiv 1804.02607 v2 pith:5GEANX5C submitted 2018-04-08 hep-ph

classification hep-ph
keywords gammabes-iiidecaydominancefindmesonrightarrowtheoretically
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

The decay $\eta'\rightarrow\pi^0\gamma\gamma$ is studied theoretically in the framework of the Vector Meson Dominance model (VMD). We find theoretically a significant contribution of the interference of $\omega-\rho$ and provide theoretical Dalitz-plots. Comparison with the experimental results of BES-III \cite{BES-III} is done. We find some tension between our predicted value and the observed result. Our calculations can be also checked using the data of GAMS-$4\pi$.

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Cited by 1 Pith paper

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  1. Kinematic Fingerprints of a Nucleon-Triggered $V_{\mathcal{B}}$ in Rare $\eta^{(\prime)}\to\pi^0(\eta)\gamma\gamma$ Decays on Nucleon Targets

    hep-ph 2026-08 conditional novelty 5.0 of 10

    The nucleon-triggered V_B model predicts observable events beyond the on-shell kinematic limit in eta to pi0 gamma gamma on nucleon targets.

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