Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-03-30
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.
Kniehl Bernd A.
Kramer Georgiana
Pötter B.
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