UNIGE document Scientific Article
previous document  unige:47339  next document
add to browser collection

Measurement of the lifetime of the tau lepton

CollaborationWith : Achard, Pablo / Ambrosi, Giovanni / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Pohl, Martin / Sciarrino, Deborah
Published in Physics Letters. B. 2000, vol. 479, no. 1-3, p. 67-78
Abstract The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in ττ=293.2±2.0(stat.)±1.5(syst.fs. The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, αs is found to be αs(mτ2) = 0.319 ± 0.015 (exp) ± 0.014 (theory).
Full text
(ISO format)
L3 COLLABORATION. Measurement of the lifetime of the tau lepton. In: Physics Letters. B, 2000, vol. 479, n° 1-3, p. 67-78. doi: 10.1016/S0370-2693(00)00347-6 https://archive-ouverte.unige.ch/unige:47339

317 hits



Deposited on : 2015-02-27

Export document
Format :
Citation style :