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Determination of alpha(s)(M(tau)(2)): conformal mapping approach
- 1.0368723 - FZÚ 2012 RIV NL eng J - Journal Article
Caprini, I. - Fischer, Jan
Determination of alpha(s)(M(tau)(2)): conformal mapping approach.
Nuclear Physics B-Proceedings Supplements. Roč. 218, - (2011), s. 128-133. ISSN 0920-5632.
[11th International Workshop on Tau Lepton Physics. Manchester, 13.09.2010-17.09.2010]
R&D Projects: GA MŠMT LC527; GA MŠMT LA08015
Institutional research plan: CEZ:AV0Z10100502
Keywords : perturbative QCD expansion * conformal mapping * hadronic decay of the tau lepton
Subject RIV: BF - Elementary Particles and High Energy Physics
We discuss a new class of expansions in perturbative QCD, based on the technique of conformal mappings of the Borel plane, and apply them to the hadronic decays of the tau lepton. Using the expansion up to the fifth order in the MSbar scheme, the method leads to the prediction /alpha_s(M^2_tau)=0.320 /pm 0.011.
Permanent Link: http://hdl.handle.net/11104/0202991
Number of the records: 1