AN OPTIMIZED BASIS FOR HADRONIC LIGHT-BY-LIGHT SCATTERING

Abstract We present a new basis for the hadronic light-by-light (HLbL) tensor that is optimized for the evaluation of narrow-resonance contributions to HLbL scattering in the anomalous magnetic moment of the muon.As main advantage, kinematic singularities are manifestly absent for pseudoscalar, scalar, and axial-vector Hoodies states, while the rem