arXiv:hep-ph/0003297·v1·High Energy Physics — Phenomenology
Strong Coupling Constant from Scaling Violations in Fragmentation Functions
B.A. Kniehl🇩🇪 · G. Kramer🇩🇪 · B. Pötter🇩🇪
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.
Comments: 10 pages, 3 eps figues