Search for pseudoscalar bosons decaying into e+e- pairs in the NA64 experiment at the CERN SPS
Date Issued
2021-12
Author(s) USM
Lyubovitskij, V.E.
Rojas, R.
Vasquez Arenas, G.
DOI
10.1103/PhysRevD.104.L111102
Abstract
We report the results of a search for a light pseudoscalar particle a that couples to electrons and decays to e(+) e(-) perfbnned using the high-energy CERN SPS H4 electron beam. If such light pseudoscalar exists, it could explain the ATOMKI anomaly (an e
