Strong Coupling Constant from Scaling Violations in Fragmentation Functions
Strong Coupling Constant from Scaling Violations in Fragmentation Functions
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.
B. A. Kniehl、G. Kramer、B. P?tter
物理学
B. A. Kniehl,G. Kramer,B. P?tter.Strong Coupling Constant from Scaling Violations in Fragmentation Functions[EB/OL].(2000-03-30)[2025-07-21].https://arxiv.org/abs/hep-ph/0003297.点此复制
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