Measurement of the t (t)over-bar production cross-section using eμ events with b-tagged jets in pp collisions at √s = 7 and 8 TeV with the ATLAS detector (vol 76, pg 642, 2014)



Aad, G, Abbott, B, Abdallah, J, Khalek, S Abdel, Abdinov, O, Aben, R, Abi, B, Abolins, M, AbouZeid, OS, Abramowicz, H
et al (show 2877 more authors) (2016) Measurement of the t (t)over-bar production cross-section using eμ events with b-tagged jets in pp collisions at √s = 7 and 8 TeV with the ATLAS detector (vol 76, pg 642, 2014) EUROPEAN PHYSICAL JOURNAL C, 76 (11). 642-. ISSN 1434-6044, 1434-6052

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Abstract

The ATLAS measurement of the inclusive top quark pair (tt¯$$t\bar{t}$$) cross-section σtt¯$$\sigma _{t\bar{t}}$$ in proton–proton collisions at s=8$$\sqrt{s}=8$$ TeV$$\,\mathrm{TeV}$$ has been updated using the final 2012 luminosity calibration. The updated cross-section result is: σtt¯=242.9±1.7±5.5±5.1±4.2pb,$$\begin{aligned} \sigma _{t\bar{t}}= 242.9\pm 1.7\pm 5.5\pm 5.1\pm 4.2\,\mathrm pb, \end{aligned}$$where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, knowledge of the integrated luminosity and of the LHC beam energy. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. The measurement of the ratio of tt¯$$t\bar{t}$$ cross-sections at s=8$$\sqrt{s}=8$$ TeV$$\,\mathrm{TeV}$$ and s=7$$\sqrt{s}=7$$ TeV$$\,\mathrm{TeV}$$, and the s=8$$\sqrt{s}=8$$ TeV$$\,\mathrm{TeV}$$ fiducial measurement corresponding to the experimental acceptance of the leptons, have also been updated.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 27 Mar 2017 11:03
Last Modified: 22 May 2026 19:28
DOI: 10.1140/epjc/s10052-016-4501-2
Open Access URL: https://link.springer.com/content/pdf/10.1140/epjc...
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3006653
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