Vector meson dominance in η'→π⁰γγ decay

2018/04/07 by Yaroslav Balytskyi, Balytskyi, Yaroslav
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1804.02607

openalex publication_date 2018/04/08 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28

Abstract

The decay η'→π⁰γγ is studied theoretically in the framework of the Vector Meson Dominance model (VMD). We find theoretically a significant contribution of the interference of ω-ρ and provide theoretical Dalitz-plots. Comparison with the experimental results of BES-III \citeBES-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-4π.

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