THE b − u SKEWED PARTON DISTRIBUTIONS
نویسنده
چکیده
The b-u skewed parton distributions (SPDs) are discussed. The SPDs allow an un-ambigous superposition of overlap and resonsance contributions and their zeroth order moments represent the B → π transition form factors. The values of the form factors at maximum recoil are found to be F + (0) = F 0 (0) = 0.22 ± 0.05 in agreement with measurements of the B → ππ branching ratio. The branching ratios for the semi-leptonic B → π decays are evaluated too.
منابع مشابه
Skewed parton distributions for B → π transitions
We investigate the b-u skewed parton distributions (SPDs) for B → π transitions and determine the contributions from several sources (overlaps of soft light-cone wave functions, quark-antiquark annihilations and meson resonances). The B → π transition form factors, which are relevant in exclusive semi-leptonic and non-leptonic B-decays, are obtained by integrating the b-u SPDs over the momentum...
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