Generalized Heavy-to-Light Form Factors in Light-Cone Sum Rules
High Energy Physics - Phenomenology
2015-06-18 v2 High Energy Physics - Experiment
Abstract
We study the form factors for a heavy meson into the S-wave system with an invariant mass below 1~GeV. The mesonic final state interactions are described in terms of the scalar form factors, which are obtained from unitarized chiral perturbation theory. Employing generalized light-cone distribution amplitudes, we compute the heavy-to-light transition using light-cone sum rules. Our approach simultaneously respects constraints from analyticity and unitarity, and also takes advantage of the power expansion in the and the strong coupling constant.
Keywords
Cite
@article{arxiv.1312.3087,
title = {Generalized Heavy-to-Light Form Factors in Light-Cone Sum Rules},
author = {Ulf-G. Meißner and Wei Wang},
journal= {arXiv preprint arXiv:1312.3087},
year = {2015}
}
Comments
8 pages, 3 figures, v2: 11 pages, 3 figures, title changed, some clarifications and references added, matches version to appear in Physics Letters B