Journal article
Measurement of the one-prong hadronic tau branching ratios at LEP
K Ackerstaff, G Alexander, J Allison, N Altekamp, KJ Anderson, S Anderson, S Arcelli, S Asai, SF Ashby, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, JR Batley, S Baumann, J Bechtluft, C Beeston, T Behnke Show all
European Physical Journal C | Published : 1998
Abstract
The branching ratios of the τ- → h- ντ, τ- → h- π0ντ and τ- → h- ≥ 2π0ντ decays have been measured using the 1991-1995 data recorded with the OPAL detector at LEP. These branching ratios are measured simultaneously using three selection criteria and are found to be BR(τ- → h- ντ) = (11.98 ± 0.13 ± 0.16)% BR(τ- → h- π0ντ) = (25.89 ± 0.17 ± 0.29)% BR(τ- → h- ≥ 2π0ντ) = (9.91 ± 0.31 ± 0.27)% where the first error is statistical and the second is systematic.