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 λB = 460 110 MeV at the scale 1 GeV. A simple QCD-motivated parametrization of the distribution amplitude is suggested.
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