arXiv:hep-ph/0309330·v1·High Energy Physics — Phenomenology
The B-Meson Distribution Amplitude in QCD
V.M.Braun🇩🇪 · D.Yu.Ivanov🇷🇺 · G.P.Korchemsky🇫🇷
Abstract
The B-meson distribution amplitude is calculated using QCD sum rules. In particular we obtain an estimate for the integral relevant to exclusive B-decays \lambda_B = 460 \pm 110 MeV at the scale 1 GeV. A simple QCD-motivated parametrization of the distribution amplitude is suggested.
Comments: 17 pages, 8 figures, Latex style