alpha_s at low Q^2 from e+e- and tau data

Details alpha_s at low Q^2 from e+e- and tau data alpha_s at low Q^2 from e+e- and tau data

2001-06-02

arxiv.org/abs/hep-ex/0106011v1

eConf C010430 (2001) M09

Physics

High Energy Physics

High Energy Physics - Experiment

Invited talk at e+e- Physics at Intermediate Energies Workshop, SLAC, Stanford, CA, 30 April - 2 May 2001, (M09) 6 pages, LaTe

Scientific paper

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 moments of R. The current e+e- data is compared with the OPAL tau data and a prediction is made on the achievable accuracy of QCD tests with the projected precision of PEP-N [3].

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