Rho-meson and related meson wave functions in QCD sum rules with nonlocal condensates

摘要

We apply the nonlocal condensate formalism and construct generalised QCD sum rules (including O((alpha)(sub s))-radiative corrections) for (rho)-, (rho) (sup ')- and b(sub 1)-meson wave functions of twist 2. As a byproduct we predict the lepton decay constant f(sub (rho)(sup ')) and estimate the mass of (rho)(sup ')-meson. For all these mesons we obtain the first 10 moments of wave functions and suggest the models for the last. These results are compared with those of Chernyak and Zhitnitsky and of Ball and Braun 20 refs., 5 figs., 3 tabs. Submitted to Physics Letters. B