2022 Impact factor 4.4
Particles and Fields
Eur. Phys. J. C 12, 99-108
DOI 10.1007/s100529900241

Skewed parton distributions for $B\to \pi$ transitions

Th. Feldmann - P. Kroll

Fachbereich Physik, Universität Wuppertal, 42097 Wuppertal, Germany

Received: 18 June 1999 / Revised version: 8 September 1999 / Published online: 3 November 1999

We investigate the ${\rm b}$-${\rm u}$skewed parton distributions (SPDs) for $B\to \pi$ transitions and determine the contributions from several sources (overlaps of soft light-cone wave functions, quark-antiquark annihilations and meson resonances). The $B\to \pi$ transition form factors, which are relevant in exclusive semi-leptonic and non-leptonic B-decays, are obtained by integrating the ${\rm b}$-${\rm u}$ SPDs over the momentum fraction x. A phenomenological determination of the relevant parameters allows us to predict the form factors and to obtain the branching ratios for semi-leptonic $B\to \pi$ decays.

Copyright Springer-Verlag 2000