Scaling Violation in the Fragmentation Functions in e+e- Annihilation
High Energy Physics - Phenomenology
2016-09-01 v2
Abstract
A determination of the hadronic fragmentation functions of the Z-boson is presented from a study of the inclusive hadron production wit the DELPHI detector at LEP. These fragmentation functions were compared with the ones at lower energies, thus covering data in a large kinematic range: 196 <= Q^2 <= 8312 GeV^2 and x(= p_h/E_beam) > 0.08 A large scaling violation was observed, which was used to extract the strong coupling constant in second order QCD: alpha_s(Mz) =0.118 +\- 0.005. The corresponding QCD scale for five quark flavours is: Lambda_MS_bar = 230 +/- 60 MeV.
Keywords
Cite
@article{arxiv.hep-ph/9309280,
title = {Scaling Violation in the Fragmentation Functions in e+e- Annihilation},
author = {W. de Boer and T. Kussmaul and IEKP Karlsruhe},
journal= {arXiv preprint arXiv:hep-ph/9309280},
year = {2016}
}
Comments
IEKP-KA/93-8 preprint latex + eps fig (epsf macros)