Anomalous Positron Peak in Heavy-Ion Collisions

Abstract

We explore the possibility of whether the anomalous positron peak observed recently in heavyion experiments may be due to a polyelectron complex ($e^{+}{e}^{+}{e}^{-}$). The decay of such a complex with the emission of a photon leads to a positron with a kinetic energy of 341 keV, which coincides with the recently observed anomalous positron peak to within the experimental error. The hypothesis of a polyelectron complex may also explain other features of the phenomenon.