Application of Veneziano Model to Charm Meson Systems

摘要

We apply the Veneziano model to study the scattering and decay processes involving charm mesons. Imposing the Adler's PCAC consistency condition on the dual amplitude we predict the masses of the charm axial-vector mesons m(Fsub(A)) and m(Dsub(A)) to be 2.30 and 2.25 GeV, respectively. A comparison between chiral symmetry and duality, as extended to SU(4)sub(L) x SU(4)sub(R), is made. Invoking current-field identity we apply the method to the semileptonic decays of charm mesons. Decay widths and lepton spectra are calculated and compared with the current algebra predictions and the experimental data. (Atomindex citation 09:375014)