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https://hdl.handle.net/10316/108573
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 | Authors: | Santos, S. P. Amor dos Carvalho, J. Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
Issue Date: | 2016 | Publisher: | Springer Nature | Serial title, monograph or event: | European Physical Journal C | Volume: | 76 | Issue: | 1 | 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 | URI: | https://hdl.handle.net/10316/108573 | DOI: | 10.1140/epjc/s10052-015-3851-5 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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Search-for-flavourchanging-neutral-current-topquark-decays-to-qZ-in-pp-collision-data-collected-with-the-ATLAS-detector-at-s8TeVEuropean-Physical-Journal-C.pdf | 2.07 MB | Adobe PDF | View/Open |
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