Skewed parton distributions for transitions
Th. Feldmann - P. Kroll
Fachbereich Physik, Universität Wuppertal, 42097
Received: 18 June 1999 / Revised version: 8 September 1999 / Published online: 3 November 1999
We investigate the -skewed parton distributions (SPDs) for transitions and determine the contributions from several sources (overlaps of soft light-cone wave functions, quark-antiquark annihilations and meson resonances). The transition form factors, which are relevant in exclusive semi-leptonic and non-leptonic B-decays, are obtained by integrating the - 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 decays.
Copyright Springer-Verlag 2000