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Production and properties of the τ-lepton in e+e− annihilation at C.M. energies from 12 to 31.6 GeV

Brandelik, R et al. (1980) Production and properties of the τ-lepton in e+e− annihilation at C.M. energies from 12 to 31.6 GeV. Physics Letters B, 92 (1-2). pp. 199-205. ISSN 0370-2693

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Abstract

We have observed τ production in e+e− annihilation at centre-of-mass energies between 12 and 31.6 GeV with cross sections in agreement with the QED τ-pair cross section. Branching ratios for τ decay have been measured and are consistent with the world averages. We have determined the cutoff parameters of QED Λ+ (Λ−) to be > 73 GeV (82 GeV) and have obtained an upper limit on the τ lifetime of 1.4 × 10−12 s(95% CL).

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
Depositing User: Sharon Beastall
Date Deposited: 17 Mar 2011 11:50
Last Modified: 23 Mar 2011 10:11
URI: http://eprints.hud.ac.uk/id/eprint/9858

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