Strong Coupling Constant from Scaling Violations in Fragmentation Functions

Details Strong Coupling Constant from Scaling Violations in Fragmentation Functions Strong Coupling Constant from Scaling Violations in Fragmentation Functions

2000-03-30

arxiv.org/abs/hep-ph/0003297v1

Phys.Rev.Lett. 85 (2000) 5288-5291

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 3 eps figues

Scientific paper

10.1103/PhysRevLett.85.5288

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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