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arxiv: hep-ph/0309330 · v1 · submitted 2003-09-29 · ✦ hep-ph

The B-Meson Distribution Amplitude in QCD

classification ✦ hep-ph
keywords amplitudedistributionb-mesonb-decayscalculatedestimateexclusiveintegral
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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.

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