A Standard Model Explanation for the "ATOMKI Anomaly"

A. Aleksejevs, S. Barkanova, Yu. G. Kolomensky +1

Using the $e^{+}{e}^{-}$ pair spectrometer at the 5 MV Van de Graaff accelerator at the Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), Krasznahorkay et al. have…