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

L3 Collaboration

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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 ± 0.105 ± 0.073%, B(τ → (3-prong)) = 14.556 ± 0.105 ± 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.

Original languageEnglish (US)
Pages (from-to)189-198
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume519
Issue number3-4
DOIs
StatePublished - Nov 1 2001

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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