Masses and decay constants of heavy$ndash$light flavour mesons in a variational scheme

Abstract

The hadronic properties of heavy–light flavour mesons, vis a vis B, Bs, D and Ds, are investigated by treating the light flavour relativistically and the heavy flavour non-relativistically with an effective quark–antiquark interaction potential of the form −αc/r + Arν. The Fermi momentum parameter generally used for experimental analysis, ground state masses, the ratio of the pseudoscalar decay constants and the vector–pseudoscalar mass differences and their ratios are computed for values of the potential index ν varying from 0.5 to 2.0. The excellent agreement of the properties calculated here with the experimental values suggest the most suitable potential form to be ν = 0.5.