Study of n →e+e-y dalitz decay to measure the electromagnetic transition from factor of the eta meson with WASA-at-COSY facility

Abstract

We report the study of the Dalitz decay n →e+e-y to measure the transition from factor of the n meson. In this dalitz decay, which is also known as conversion decay, the n meson decays into a photon and a lepton pair (e+,e-). for a point-like particle, the decay rate can be calculated within the QED framework.