Perturbative and non-perturbative aspects of heavy-quark fragmentation
Abstract
We describe a new approach to heavy-quark fragmentation which is based on a resummed perturbative calculation and parametrization of power corrections, concentrating on the z -> 1 limit, where the heavy meson carries a large fraction of the momentum of the initial quark. It is shown that the leading power corrections in this region are controlled by the scale m(1-z). Renormalon analysis is then used to extend the perturbative treatment of soft and collinear radiation to the non-perturbative regime. Theoretical predictions are confronted with data on B-meson production in e+e- annihilation.
Keywords
Cite
@article{arxiv.hep-ph/0308235,
title = {Perturbative and non-perturbative aspects of heavy-quark fragmentation},
author = {Einan Gardi and Matteo Cacciari},
journal= {arXiv preprint arXiv:hep-ph/0308235},
year = {2011}
}
Comments
Invited talk (E.G.) at the International Europhysics Conference on High Energy Physics of the European Physical Society, July 2003, Aachen, Germany; 6 pages, 6 postscript figures