Dark boson mediation of the π0 → γe+e− decay

Abstract

The phenomenological implications to the decay of the neutral pion from the introduction of new dark particles are discussed. We calculate the contribution to the π0 decay width and then we extend the theory by adding dark sector vector particles which interact through γμ, σμν and σμνγ5. We calculate the total decay width of π0→γe+e− where the electron-positron pair is produced through a decay of a dark meson. The implication of the presented model on the present and future searches for new dark particles is also discussed.