Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
New sum rules for and form factors are derived from the correlation functions expanded near the light-cone in terms of B-meson distribution amplitudes. The contributions of quark-antiquark and quark-antiquark-gluon components in the B meson are taken into account. Models for the B-meson three-particle distribution amplitudes are suggested, based on QCD sum rules in HQET. Employing the new light-cone sum rules we calculate the form factors at small momentum transfers, including violation effects. The results agree with the predictions of the conventional light-cone sum rules.
Cite
@article{arxiv.hep-ph/0611193,
title = {Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes},
author = {Alexander Khodjamirian and Thomas Mannel and Nils Offen},
journal= {arXiv preprint arXiv:hep-ph/0611193},
year = {2008}
}
Comments
32 pages, 7 figures, the discussion of numerical results extended, two references added, version to be published in Phys.Rev. D