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Article
Report number arXiv:1204.6720 ; CERN-PH-EP-2012-075 ; CERN-PH-EP-2012-075
Title Measurement of τ polarization in Wτν decays with the ATLAS detector in pp collisions at s = 7 TeV
Related titleMeasurement of tau polarization in W->taunu decays with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV
Author(s) ATLAS Collaboration  Pokaż wszystkich 3042 autorów
Publication 2012-07-03
Imprint 01 May 2012
Number of pages 25
Note Comments: 10 pages plus author list (25 pages total), 4 figures, 4 tables
10 pages plus author list (25 pages total), 4 figures, 4 tables, revised author list, matches published EPJC version
In: Eur. Phys. J. C 72 (2012) 2062
DOI 10.1140/epjc/s10052-012-2062-6
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Abstract In this paper, a measurement of tau polarization in Wτν decays is presented. It is measured from the energies of the decay products in hadronic τ decays with a single final state charged particle. The data, corresponding to an integrated luminosity of 24 pb1, were collected by the ATLAS experiment at the Large Hadron Collider in 2010. The measured value of the τ polarization is Pτ=1.06±0.04(stat)+0.050.07(syst), in agreement with the Standard Model prediction, and is consistent with a physically allowed 95% CL interval [-1,-0.91]. Measurements of tau polarization have not previously been made at hadron colliders.
Copyright/License preprint: © 2012-2024 CERN (License: CC-BY-3.0)
publication: © 2012-2024 CERN (License: CC-BY-3.0)



Corresponding record in: Inspire
Email contact: tony.doyle@glasgow.ac.uk


 Rekord stworzony 2012-05-01, ostatnia modyfikacja 2024-03-14


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