Fragmentation functions and their role in determining the polarized parton densities

2002/09/05 by S. Kretzer, E. Leader, E. Christova
Physics and Astronomy · #hep-ph

paper · pdf

published as Acta Phys.Polon. B33 (2002) 3743-3748 · 6 pages, 2 Figures, a talk presented by E. Leader at the X International Workshop on Deep Inelastic Scattering (DIS2002) in Krakow, 2002, Poland

arxiv created 2002/09/05 · arxiv updated 2009/11/30

Abstract

We extract the pion fragmentation functions and their uncertainties from a judicious choice of e+e- and semi-inclusive DIS data. These are used to study the error propagation in the extraction of polarized parton densities from semi-inclusive DIS asymmetries. We conclude that the uncertainties on polarized PDs have been underestimated in the past.

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