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|Title:||Search for flavour-changing neutral current top-quark decays to qZ in pp collision data collected with the ATLAS detector at √s = 8 TeV|
|Other Titles:||Search for flavour-changing neutral current top-quark decays to qZ in pp collision data collected with the ATLAS detector at root s = 8 TeV|
|Citation:||European Physical Journal C, 2016; 76(1):1-24|
|G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... [et al.] (The ATLAS Collaboration)|
|Abstract:||A search for the flavour-changing neutral-current decay t→qZ is presented. Data collected by the ATLAS detector during 2012 from proton–proton collisions at the Large Hadron Collider at a centre-of-mass energy of s√ = 8 TeV, corresponding to an integrated luminosity of 20.3 fb⁻¹, are analysed. Top-quark pair-production events with one top quark decaying through the t→qZ (q=u, c) channel and the other through the dominant Standard Model mode t→bW are considered as signal. Only the decays of the Z boson to charged leptons and leptonic W boson decays are used. No evidence for a signal is found and an observed (expected) upper limit on the t→qZ branching ratio of 7×10⁻⁴ (8×10⁻⁴) is set at the 95% confidence level|
|Rights:||© CERN for the benefit of the ATLAS collaboration 2016. This article is published with open access at Springerlink.com|
|Appears in Collections:||Physics publications|
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