Títol: QCD formulation of the tau decay and determination of Lambda (MS)

Autor/a: Narison, Stephan; Pich Zardoya, Antonio

Resum: We present a simple formulation of the inclusive and exclusive semi-hadronic decays of the tau lepton using QCD-duality finite energy sum rules (FESRs). We find that the tau decay is a good laboratory for measuring the QCD scale Lambda. Within the present experimental accuracy, we obtain LambdaMS ⋍ 100-200 MeV to four loops. This prediction can be sensibly improved once the experimental situation has been clarified.

URI: http://hdl.handle.net/10550/39702

Creado en: 1988

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