Probing the ATOMKI X17 vector boson using Dalitz decays $V\to P{e}^{+}{e}^{-}$

Chien-Thang Tran, Mikhail A. Ivanov, Anh-Tuyet T. Nguyen

Recent anomalies observed in $e^{+}{e}^{-}$ nuclear transitions of ${}^8\text{Be}$, ${}^4\text{He}$, and ${}^{12}\text{C}$ by the ATOMKI collaboration may hint at the existence of a v…