Updated measurement of the τ lepton lifetime
R Barate, D Buskulic, D Decamp, P Ghez, C Goy, JP Lees, A Lucotte, MN Minard, JY Nief, B Pietrzyk, MP Casado, M Chmeissani, P Comas, JM Crespo, M Delfino, E Fernandez, M Fernandez-Bosman, L Garrido, A Juste, M Martinez Show all
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Published : 1997
A new measurement of the mean lifetime of the τ lepton is presented. Three different analysis methods are applied to a sample of 90000 τ pairs, collected in 1993 and 1994 with the ALEPH detector at LEP. The average of this measurement and those previously published by ALEPH is ττ = 290.1 ± 1.5 ± 1.1 fs. © 1997 Elsevier Science B.V.