The twist-3 distribution amplitudes in the $B\toπ$ transition form factor

Details The twist-3 distribution amplitudes in the $B\toπ$ transition form factor The twist-3 distribution amplitudes in the $B\toπ$ transition form factor

2004-02-04

arxiv.org/abs/hep-ph/0402040v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 figure

Scientific paper

We derive an expression for the $B\to\pi$ transition form factor only
depending the twist-3 distribution amplitudes by choosing an adequate chiral
current correlator in the light-cone QCD sum rules. Our result show that the
contribution from the twist-3 distribution amplitudes to the $f_{B\pi}^+(q^2)$
give a constraint on the twist-3 light-cone distribution amplitude.

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