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Strong Coupling Constant from Scaling Violations in Fragmentation Functions

B. A. Kniehl·G. Kramer·B. Pötter
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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.

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B. A. Kniehl, G. Kramer, B. Pötter. 2000-03-30. Strong Coupling Constant from Scaling Violations in Fragmentation Functions. https://doi.org/10.1103/physrevlett.85.5288

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