Eur Phys J C (2004) 33: s876-s880
https://doi.org/10.1140/epjcd/s2003-03-1002-y

PS10 Non-perturbative Field Theory

Perturbative and non-perturbative aspects of heavy-quark fragmentation

¹ Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany
² Dipartimento di Fisica, Università di Parma, Italy, and INFN, Sezione di Milano, Gruppo Collegato di Parma,  

Received: 23 September 2003
Accepted: 2 October 2003
Published online: 22 October 2003

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 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.

PACS: 13.66.Bc Hadron production in e ^– e ⁺ interactions – 12.38.Cy Summation of perturbation theory – 12.39.StFactorization