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Article
Report number arXiv:1702.02859 ; CERN-EP-2016-223
Title Fiducial, total and differential cross-section measurements of t-channel single top-quark production in pp collisions at 8 TeV using data collected by the ATLAS detector
Related titleFiducial, total and differential cross-section measurements of t-channel single top-quark production in pp collisions at 8 TeV using data collected by the ATLAS detector
Author(s) ATLAS Collaboration  顯示全部 2852 名作者
Publication 2017-08-09
Imprint 09 Feb 2017
Number of pages 70
Note 70 pages in total, author list starting on page 54, 22 figures, 21 tables, submitted to Eur. Phys. J. C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-05/. This version matches publication
In: Eur. Phys. J. C 77 (2017) 531
DOI 10.1140/epjc/s10052-017-5061-9
Subject category Particle Physics - Experiment ; hep-ex
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords electroweak interaction ; top physics ; experimental results
Abstract Detailed measurements of t-channel single top-quark production are presented. They use 20.2 fb1 of data collected by the ATLAS experiment in proton-proton collisions at a centre-of-mass energy of 8 TeV at the LHC. Total, fiducial and differential cross-sections are measured for both top-quark and top-antiquark production. The fiducial cross-section is measured with a precision of 5.8 % (top quark) and 7.8 % (top antiquark), respectively. The total cross-sections are measured to be σtot(tq)=56.73.8+4.3pb for top-quark production and σtot(t¯q)=32.92.7+3.0pb for top-antiquark production, in agreement with the Standard Model prediction. In addition, the ratio of top-quark to top-antiquark production cross-sections is determined to be Rt=1.72±0.09, with an improved relative precision of 4.9 % since several systematic uncertainties cancel in the ratio. The differential cross-sections as a function of the transverse momentum and rapidity of both the top quark and the top antiquark are measured at both the parton and particle levels. The transverse momentum and rapidity differential cross-sections of the accompanying jet from the t-channel scattering are measured at particle level. All measurements are compared to various Monte Carlo predictions as well as to fixed-order QCD calculations where available.
Copyright/License Preprint: © 2016-2024 CERN (License: CC-BY-4.0)



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Email contact: fmalek@lpsc.in2p3.fr


 記錄創建於2017-02-07,最後更新在2024-09-28


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