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Perturbative and non-perturbative aspects of heavy-quark fragmentation

Einan Gardi·Matteo Cacciari
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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.

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Einan Gardi, Matteo Cacciari. 2003-08-23. Perturbative and non-perturbative aspects of heavy-quark fragmentation. https://doi.org/10.1140/epjcd%2Fs2003-03-1002-y

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