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Título : QCD analysis of the tau hadronic width
Autor : Braaten, E., Narison, Stéphan, Pich, Antonio
Fecha de publicación : 13-Apr-1992
Editor: Elsevier
Resumen: The total τ hadronic width can be accurately calculated using analyticity and the operator product expansion. The theoretical analysis of this observable is updated to include all available perturbative and non-perturbative corrections. Experimental measurements of τ decay rates are used to determine with high precision the QCD running coupling constant at the scale of the τ mass. The analysis is also used to study the present discrepancy between the experimental measurements of the leptonic branching fractions of the τ and its total lifetime.
Descripción : 32 páginas, 1 figura, 4 tablas.-- CERN-TH-6070-91 ; NUHEP-TH-91-8 ; PM-91-8.
Versión del editor:
ISSN: 0550-3213
DOI: 10.1016/0550-3213(92)90267-F
Citación : Nuclear Physics B 373(3): 581-612 (1992)
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