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Measurement of the tau lepton lifetime

Decamp, D. and Finch, Alexander (1992) Measurement of the tau lepton lifetime. Physics Letters B, 279 (3-4). pp. 411-421. ISSN 0370-2693

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The mean lifetime of the τ lepton is measured from a sample of Z→τ+τ− decays observed with the ALEPH detector at LEP in 1989 and 1990. A new technique is applied to the events containing two one-prong decays: the lifetime is measured from the observed correlation between the impact parameters and azimuthal angles of the two charged tracks. The lifetime is also determined from measured vertex displacements for three-prong decays and track impact parameters for one-prong decays. The combined results is ττ=291 ± 13 (stat) ±6 (syst.) fs.

Item Type: Journal Article
Journal or Publication Title: Physics Letters B
Departments: Faculty of Science and Technology > Physics
ID Code: 63781
Deposited By: ep_importer_pure
Deposited On: 07 May 2013 15:40
Refereed?: Yes
Published?: Published
Last Modified: 11 Apr 2018 00:59
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