Perturbative and non-perturbative aspects of heavy-quark fragmentation

Details Perturbative and non-perturbative aspects of heavy-quark fragmentation Perturbative and non-perturbative aspects of heavy-quark fragmentation

2003-08-23

arxiv.org/abs/hep-ph/0308235v1

Eur.Phys.J.C33:s876-s880,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk (E.G.) at the International Europhysics Conference on High Energy Physics of the European Physical Society, July

Scientific paper

10.1140/epjcd/s2003-03-1002-y

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.

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