Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/115046
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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 | Abreu, R. | - |
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 | et al. | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | European Physical Journal C: Particles and Fields, 2018; 78(6):487-1-487-31 | - |
dc.identifier.issn | 1434-6044 | - |
dc.identifier.issn | 1434-6052 | - |
dc.identifier.uri | http://hdl.handle.net/2440/115046 | - |
dc.description.abstract | The inclusive and fiducial tt¯ production cross-sections are measured in the lepton+jets channel using 20.2 fb⁻¹ of proton–proton collision data at a centre-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. Major systematic uncertainties due to the modelling of the jet energy scale and b-tagging efficiency are constrained by separating selected events into three disjoint regions. In order to reduce systematic uncertainties in the most important background, the W+,jets process is modelled using Z+ jets events in a data-driven approach. The inclusive tt¯ cross-section is measured with a precision of 5.7% to be σinc(tt¯)=248.3±0.7(stat.)±13.4(syst.)±4.7(lumi.) pb, assuming a top-quark mass of 172.5 GeV. The result is in agreement with the Standard Model prediction. The cross-section is also measured in a phase space close to that of the selected data. The fiducial cross-section is σfid(tt¯)=48.8±0.1(stat.)±2.0(syst.)±0.9(lumi.) pb with a precision of 4.5%. | - |
dc.description.statementofresponsibility | M. Aaboud ... D. Duvnjak ... P. Jackson ... L. Lee ... A. Petridis ... M.J. White ... [et al.] (The ATLAS Collaboration) | - |
dc.language.iso | en | - |
dc.publisher | Springer | - |
dc.rights | © CERN for the benefit of the ATLAS collaboration 2018. 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. | - |
dc.source.uri | http://dx.doi.org/10.1140/epjc/s10052-018-5904-z | - |
dc.subject | ATLAS Collaboration | - |
dc.title | Measurement of the inclusive and fiducial tt¯ production cross-sections in the lepton+jets channel in pp collisions at √s=8TeV with the ATLAS detector | - |
dc.title.alternative | Measurement of the inclusive and fiducial tt -bar production cross-sections in the lepton+jets channel in pp collisions at root s=8TeV with the ATLAS detector | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1140/epjc/s10052-018-5904-z | - |
dc.relation.grant | ARC | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest 3 Physics publications |
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hdl_115046.pdf | Published version | 1.6 MB | Adobe PDF | View/Open |
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