Radiative and Dalitz decays of ${\rm Y}(1S)$ in the light of the ATOMKI X17 anomaly

Chien-Thang Tran, Mikhail A. Ivanov

We study the radiative decay ${\rm Y}(1S)\to {\eta }_b\gamma$ and the Dalitz decay ${\rm Y}(1S)\to {\eta }_b{e}^{+}{e}^{-}$ within the framework of the Covariant Confined Quark Model. We provide theoretical predicti…