Strong Coupling Constant from Scaling Violations in Fragmentation Functions
High Energy Physics - Phenomenology
2009-10-31 v1 High Energy Physics - Experiment
Abstract
We present a new determination of the strong coupling constant alpha_s through the scaling violations in the fragmentation functions for charged pions, charged kaons, and protons. In our fit we include the latest e+e- annihilation data from CERN LEP1 and SLAC SLC on the Z-boson resonance and older, yet very precise data from SLAC PEP at center-of-mass energy sqrt(s)=29 GeV. A new world average of alpha_s is given.
Cite
@article{arxiv.hep-ph/0003297,
title = {Strong Coupling Constant from Scaling Violations in Fragmentation Functions},
author = {B. A. Kniehl and G. Kramer and B. Pötter},
journal= {arXiv preprint arXiv:hep-ph/0003297},
year = {2009}
}
Comments
10 pages, 3 eps figues