Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/124571
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DC Field | Value | Language |
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dc.contributor.author | Aaboud, M. | - |
dc.contributor.author | Aad, G. | - |
dc.contributor.author | Abbott, B. | - |
dc.contributor.author | Abdinov, O. | - |
dc.contributor.author | Abeloos, B. | - |
dc.contributor.author | Abidi, S.H. | - |
dc.contributor.author | AbouZeid, O.S. | - |
dc.contributor.author | Abraham, N.L. | - |
dc.contributor.author | Abramowicz, H. | - |
dc.contributor.author | Abreu, H. | - |
dc.contributor.author | Abulaiti, Y. | - |
dc.contributor.author | Acharya, B.S. | - |
dc.contributor.author | Adachi, S. | - |
dc.contributor.author | Adamczyk, L. | - |
dc.contributor.author | Adelman, J. | - |
dc.contributor.author | Adersberger, M. | - |
dc.contributor.author | Adye, T. | - |
dc.contributor.author | Affolder, A.A. | - |
dc.contributor.author | Afik, Y. | - |
dc.contributor.author | Agheorghiesei, C. | - |
dc.contributor.author | et al. | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | The Journal of High Energy Physics, 2018; 2018(7):1-41 | - |
dc.identifier.issn | 1126-6708 | - |
dc.identifier.issn | 1029-8479 | - |
dc.identifier.uri | http://hdl.handle.net/2440/124571 | - |
dc.description.abstract | A search for flavour-changing neutral-current processes in top-quark decays is presented. Data collected with the ATLAS detector from proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of √ s = 13 TeV, corresponding to an integrated luminosity of 36.1 fb−1 , are analysed. The search is performed using topquark pair events, with one top quark decaying through the t → qZ (q = u, c) flavourchanging neutral-current channel, and the other through the dominant Standard Model mode t → bW. Only Z boson decays into charged leptons and leptonic W boson decays are considered as signal. Consequently, the final-state topology is characterized by the presence of three isolated charged leptons (electrons or muons), at least two jets, one of the jets originating from a b-quark, and missing transverse momentum from the undetected neutrino. The data are consistent with Standard Model background contributions, and at 95% confidence level the search sets observed (expected) upper limits of 1.7 × 10−4 (2.4 × 10−4 ) on the t → uZ branching ratio and 2.4 × 10−4 (3.2 × 10−4 ) on the t → cZ branching ratio, constituting the most stringent limits to date. | - |
dc.description.statementofresponsibility | M. Aaboud … Damir Duvnjak … Paul D. Jackson … Jason L. Oliver … Andreas Petridis … Abhishek Sharma … Martin White … et al. (The ATLAS Collaboration) | - |
dc.language.iso | en | - |
dc.publisher | Springer | - |
dc.rights | This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. | - |
dc.source.uri | http://dx.doi.org/10.1007/jhep07(2018)176 | - |
dc.subject | Hadron-Hadron scattering (experiments) | - |
dc.title | Search for flavour-changing neutral current top-quark decays t → qZ in proton-proton collisions at √s=13 TeV with the ATLAS detector | - |
dc.title.alternative | Search for flavour-changing neutral current top-quark decays t -> qZ in proton-proton collisions at root s=13 TeV with the ATLAS detector | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1007/JHEP07(2018)176 | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest 8 Physics publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_124571.pdf | Published version | 1.37 MB | Adobe PDF | View/Open |
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