Hadronic light-by-light scattering in the muong−2: impact of proposed measurements of theπ⁰→γγdecay width and theγ^*γ→π⁰transition form factor with the KLOE-2 experiment

Abstract

Abstract. We discuss, how planned measurements at KLOE-2 of the π 0 → γγ decay width and the γ * γ → π 0 transition form factor can improve estimates for the numerically dominant pion-exchange contribution to hadronic light-by-light scattering in the muon g − 2 and what are the limitations related to the modelling of the off-shellness of the pion.