TY - JOUR
T1 - Tau leptonic branching ratios
AU - Buskulic..[et al.], D.
AU - Casper, D.
AU - DeBonis, I.
AU - Hansen, Jørgen Beck
AU - Hansen, Jørn Dines
AU - Hansen, John Renner
AU - Hansen, Peter Henrik
AU - Nilsson, Björn Stefan
PY - 1996/5
Y1 - 1996/5
N2 - A sample of 62249 τ-pair events is selected from data taken with the ALEPH detector in 1991, 1992 and 1993. The measurement of the branching fractions for τ decays into electrons and muons is presented with emphasis on the study of systematic effects from selection, particle identification and decay classification. The results obtained are: Be = 17.79±0.12(stat)±0.06(syst)(%) and Bμ = 17.31±0.11(stat)±0.05(syst)(%). Combined with the most recent. ALEPH determination of the τ lifetime, these results provide a relative measurement of the leptonic couplings in the weak charged current for transverse W bosons: gμ/ge = 1.0002±0.0051 and gτ/gμ = 0.9943±0.0065.
AB - A sample of 62249 τ-pair events is selected from data taken with the ALEPH detector in 1991, 1992 and 1993. The measurement of the branching fractions for τ decays into electrons and muons is presented with emphasis on the study of systematic effects from selection, particle identification and decay classification. The results obtained are: Be = 17.79±0.12(stat)±0.06(syst)(%) and Bμ = 17.31±0.11(stat)±0.05(syst)(%). Combined with the most recent. ALEPH determination of the τ lifetime, these results provide a relative measurement of the leptonic couplings in the weak charged current for transverse W bosons: gμ/ge = 1.0002±0.0051 and gτ/gμ = 0.9943±0.0065.
U2 - 10.1007/s002880050133
DO - 10.1007/s002880050133
M3 - Journal article
SN - 0170-9739
VL - 70
SP - 561
EP - 577
JO - Zeitschrift fur Physik C-Particles and Fields
JF - Zeitschrift fur Physik C-Particles and Fields
IS - 4
ER -