A Measurement of the Tau Topological Branching Ratios

Details A Measurement of the Tau Topological Branching Ratios A Measurement of the Tau Topological Branching Ratios

2001-05-18

arxiv.org/abs/hep-ex/0105047v1

Eur.Phys.J.C20:617-637,2001

Physics

High Energy Physics

High Energy Physics - Experiment

32 pages, 10 figures, Accepted by Eur. Phys. J. C

Scientific paper

10.1007/PL00011152

Using data collected in the DELPHI detector at LEP-1, measurements of the inclusive tau branching ratios for decay modes containing one, three, or five charged particles have been performed, giving the following results: B_1 = B(\tau^- -> (particle)^- \geq 0pi^0 \geq 0K^0 \nu_\tau(\bar{\nu})) = (85.316 +/- 0.093 +/- 0.049)%; B_3 = B(\tau^- -> 2h^-h^+ \geq 0pi^0 \geq 0K^0 \nu_\tau) = (14.569 +/- 0.093 +/- 0.048)%; B_5 = B(\tau^- -> 3h^-2h^+ \geq 0pi^0 \geq 0K^0 \nu_\tau) = (0.115 +/- 0.013 +/- 0.006)%, where h is either a charged pi or K meson. The first quoted uncertainties are statistical and the second systematic.

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