Počet záznamů: 1

Determination of alpha(s)(M(tau)(2)): conformal mapping approach

  1. 1.
    0368723 - FZU-D 2012 RIV NL eng J - Článek v odborném periodiku
    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]
    Grant CEP: GA MŠk LC527; GA MŠk LA08015
    Výzkumný záměr: CEZ:AV0Z10100502
    Klíčová slova: perturbative QCD expansion * conformal mapping * hadronic decay of the tau lepton
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií

    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.
    Trvalý link: http://hdl.handle.net/11104/0202991