Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/5034
Title: Measurement of the W boson polarization in top quark decays with the ATLAS detector
Authors: Aad, G.
Abbott, B.
Abdallah, J.
Khalek, S. Abdel
Abdelalim, A. A.
Abdinov, O.
The ATLAS Collaboration
Sultansoy, Saleh
Keywords: Hadron-Hadron Scattering
Issue Date: 2012
Publisher: Springer
Abstract: This paper presents measurements of the polarization of W bosons in top quark decays, derived from t (t) over bar events with missing transverse momentum, one charged lepton and at least four jets, or two charged leptons and at least two jets. Data from pp collisions at a centre-of-mass energy of 7 TeV were collected with the ATLAS experiment at the LHC and correspond to an integrated luminosity of 1.04 fb(-1). The measured fractions of longitudinally, left-and right-handed polarization are F-0 = 0.67 +/- 0.07, F-L = 0.32 +/- 0.04 and F-R = 0.01 +/- 0.05, in agreement with the Standard Model predictions. As the polarization of the W bosons in top quark decays is sensitive to the Wtb vertex Lorentz structure and couplings, the measurements were used to set limits on anomalous contributions to the Wtb couplings.
URI: https://doi.org/10.1007/JHEP06(2012)088
https://hdl.handle.net/20.500.11851/5034
ISSN: 1029-8479
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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