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Title

Measurement of the topological branching fractions of the τ lepton at LEP

CollaborationWith : Achard, Pablo / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Delmeire, Evelyne / Echenard, Bertrand / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Malgeri, Luca / Natale, Sonia / Pohl, Martin
Published in Physics Letters. B. 2001, vol. 519, no. 3-4, p. 189-198
Abstract Using data collected with the L3 detector at LEP from 1992 to 1995 on the Z peak, we determine the branching fractions of the τ lepton into one, three and five charged particles to be: B(τ->(1-prong))=85.274=1.105±0.073%, B(τ->(3-prong))=14.556=1.105±0.076%, B(τ->(5-prong))=0.170=0.022±0.026%. The first uncertainties are statistical and the second systematic. The accuracy of these measurements alone is similar to that of the current world average.
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L3 COLLABORATION. Measurement of the topological branching fractions of the τ lepton at LEP. In: Physics Letters. B, 2001, vol. 519, n° 3-4, p. 189-198. https://archive-ouverte.unige.ch/unige:43257

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Deposited on : 2014-12-12

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