Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-09-29
Phys.Rev.D69:034014,2004
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 8 figures, Latex style
Scientific paper
10.1103/PhysRevD.69.034014
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.
Braun Vladimir M.
Ivanov Dmitri Yu.
Korchemsky Gregory P.
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