Measurement of the Topological Branching Fractions of the tau lepton at LEP

Details Measurement of the Topological Branching Fractions of the tau lepton at LEP Measurement of the Topological Branching Fractions of the tau lepton at LEP

2001-07-20

arxiv.org/abs/hep-ex/0107055v1

Phys.Lett.B519:189-198,2001

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1016/S0370-2693(01)01099-1

Using data collected with the L3 detector at LEP from 1992 to 1995 on the Z peak, we determine the branching fractions of the tau lepton into one, three and five charged particles to be: B(tau->(1-prong)) = 85.274 +- 0.105 +- 0.073 %, B(tau->(3-prong)) = 14.556 +- 0.105 +- 0.076 %, B(tau->(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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