Heavy-quark symmetry andD1(2420)D*πdecay

Abstract
Heavy-quark symmetry relates the D-wave amplitude for D1(2420)D*π to the amplitudes for the decays D2*(2460)D*π and D2*(2460)D*π. We discuss the extraction of the S and D partial wave amplitudes for D1D*π and their significance as tests of the applicability of heavy-quark symmetry for charm quarks.