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. https://www.freaknleather.com/product-category/welding-table-tools/