B Adeva, O Adriani, M Aguilar-Benitez, H Akbari… - Physics Letters B, 1991 - Elsevier
From 2540 Z0→ τ+ τ− events, we determine the inclusive decay branching fractions of the τ-
lepton into one and three charged particles to be 0.856±0.006 (stat.)±0.003 (syst.) and …