Adelaide Research & Scholarship
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https://hdl.handle.net/2440/114955
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| Type: | Journal article |
| Title: | Direct top-quark decay width measurement in the tt¯ lepton+jets channel at √s = 8TeV with the ATLAS experiment |
| Other Titles: | Direct top-quark decay width measurement in the tt -bar lepton+jets channel at root s = 8 TeV with the ATLAS experiment |
| Author: | Aaboud, M. Aad, G. Abbott, B. Abdinov, O. Abeloos, B. Abidi, S. AbouZeid, O. Abraham, N. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, B. Adachi, S. Adamczyk, L. Adelman, J. Adersberger, M. Adye, T. Affolder, A. Afik, Y. et al. |
| Citation: | European Physical Journal C: Particles and Fields, 2018; 78(2):129-1-129-30 |
| Publisher: | Springer |
| Issue Date: | 2018 |
| ISSN: | 1434-6044 1434-6052 |
| Statement of Responsibility: | M. Aaboud ... P. Jackson ... A. Petridis ... M.J. White ... [et al.] (The ATLAS Collaboration) |
| Abstract: | This paper presents a direct measurement of the decay width of the top quark using tt¯ events in the lepton+jets final state. The data sample was collected by the ATLAS detector at the LHC in proton–proton collisions at a centre-of-mass energy of 8 TeV and corresponds to an integrated luminosity of 20.2 fb−1. The decay width of the top quark is measured using a template fit to distributions of kinematic observables associated with the hadronically and semileptonically decaying top quarks. The result, Γt = 1.76±0.33 (stat.) +0.79−0.68 (syst.) = GeV for a top-quark mass of 172.5 GeV, is consistent with the prediction of the Standard Model. |
| Keywords: | ATLAS Collaboration |
| Rights: | © CERN for the benefit of the ATLAS collaboration 2018. This article is an open access publication. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecomm ons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3. |
| DOI: | 10.1140/epjc/s10052-018-5595-5 |
| Grant ID: | ARC |
| Published version: | http://dx.doi.org/10.1140/epjc/s10052-018-5595-5 |
| Appears in Collections: | Aurora harvest 3 Physics publications |
Files in This Item:
| File | Description | Size | Format | |
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| hdl_114955.pdf | Published version | 1.84 MB | Adobe PDF | View/Open |
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