Scientific article
Open access

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

ContributorsL3 Collaboration
Published inPhysics letters. B, vol. 519, no. 3-4, p. 189-198
Publication date2001

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.

Citation (ISO format)
L3 Collaboration. Measurement of the topological branching fractions of the <em>τ</em> lepton at LEP. In: Physics letters. B, 2001, vol. 519, n° 3-4, p. 189–198. doi: 10.1016/S0370-2693(01)01099-1
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Article (Published version)
ISSN of the journal0370-2693

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