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$\alpha_{s}$ as at Low Q$^{2}$ from $e^{+}e^{-}$ and $\tau$ Data
It has been shown in recent analyses by ALEPH [1] and OPAL [2] that precision QCD tests are possible with hadronic tau decays by comparing spectral moments of the hadronic decay ratio of the tau with QCD calculations. In principle e+e- data can be used in a similar manner by evaluating spectral mome...
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Lenguaje: | eng |
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2001
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Acceso en línea: | http://cds.cern.ch/record/503280 |