Measurement of τ Polarization in W→τν Decays With the ATLAS Detector in pp Collisions at √s=7 TeV

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Measurement of τ Polarization in W→τν Decays With the ATLAS Detector in pp Collisions at √s=7 TeV

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Title: Measurement of τ Polarization in W→τν Decays With the ATLAS Detector in pp Collisions at √s=7 TeV
Author: Franklin, Melissa; Huth, John; Jeanty, L; Kagan, M; Lopez Mateos, David; Mercurio, Kevin ORCID  0000-0002-3377-8164 ; Morii, Masahiro; Skottowe, Hugh Philip; Zevi Della Porta, G

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Citation: Aad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, A. A. Abdelalim, A. Abdesselam, et al. 2012. “Measurement of τ Polarization in W→τν Decays With the ATLAS Detector in pp Collisions at √s=7 TeV.” The European Physical Journal C 72 (7) (July). doi:10.1140/epjc/s10052-012-2062-6.
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Abstract: In this paper, a measurement of τ polarization in W→τν 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 pb−1, 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)+0.05−0.07 (syst) , in agreement with the Standard Model prediction, and is consistent with a physically allowed 95 % CL interval [−1,−0.91]. Measurements of τ polarization have not previously been made at hadron colliders.
Published Version: doi:10.1140/epjc/s10052-012-2062-6
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:33470222
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