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QCD formulation of the tau decay and determination of Lambda (MS)
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Narison, Stephan; Pich Zardoya, Antonio
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This document is a artículoDate1988
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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. |
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