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Measurement of the polarization of tau leptons produced in Z decays

Decamp, D. and Finch, Alexander (1991) Measurement of the polarization of tau leptons produced in Z decays. Physics Letters B, 265 (3-4). pp. 430-444. ISSN 0370-2693

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Abstract

The polarization of τ leptons produced in the reaction e+e−→τ+τ− at the Z resonance has been measured using the τ decay modes eνeντ, μνμντ, πντ, ϱντ, and a1ντ. The mean value obtained is Pτ = −0.152±0.045, indicating that parity is violated in the neutral current process e+e− → τ+τ−. The result corresponds to a ratio of a neutral current vector and axial vector coupling constants of the τ lepton and a value of the electroweak mixing parameter sin2θw(M2Z) = 0.2302 ± 0.0058.

Item Type: Article
Journal or Publication Title: Physics Letters B
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 63792
Deposited By: ep_importer_pure
Deposited On: 07 May 2013 14:47
Refereed?: Yes
Published?: Published
Last Modified: 20 Sep 2017 06:27
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/63792

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