Measurement of the Charge Asymmetry in Top-Quark Pair Production in the Lepton-Plus-Jets Final State in pp Collision Data at √s̅ = 8 TeV with the ATLAS Detector

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Measurement of the Charge Asymmetry in Top-Quark Pair Production in the Lepton-Plus-Jets Final State in pp Collision Data at √s̅ = 8 TeV with the ATLAS Detector

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Title: Measurement of the Charge Asymmetry in Top-Quark Pair Production in the Lepton-Plus-Jets Final State in pp Collision Data at √s̅ = 8 TeV with the ATLAS Detector
Author(s):
Aad, G.;
Abbott, B.;
Abdallah, J.;
Abdinov, O.;
Aben, R.;
Abolins, M.;
AbouZeid, O. S.;
Izen, Joseph M.;
Leyton, Michael;
Meirose, Bernhard;
Namasivayam, Harisankar;
Reeves, Kendall;
ATLAS Collaboration
Date Created: 2016-02
Item Type: article
Keywords: Show Keywords
Description: Includes erratum.
Abstract: This paper reports inclusive and differential measurements of the tt̅ charge asymmetry A_C in 20.3 fb⁻¹ of √s̅ = 8 TeV pp collisions recorded by the ATLAS experiment at the Large Hadron Collider at CERN. Three differential measurements are performed as a function of the invariant mass, transverse momentum and longitudinal boost of the tt̅ system. The tt̅ pairs are selected in the single-lepton channels (e or μ) with at least four jets, and a likelihood fit is used to reconstruct the tt̅ event kinematics. A Bayesian unfolding procedure is performed to infer the asymmetry at parton level from the observed data distribution. The inclusive tt̅ charge asymmetry is measured to be A_C = 0.009 ± 0.005 (stat. + syst.). The inclusive and differential measurements are compatible with the values predicted by the Standard Model.
ISSN: 1434-6044
Source: European Physical Journal C
Link to Related Resource: http://dx.doi.org/10.1140/epjc/s10052-016-3910-6
Persistent Link: http://hdl.handle.net/10735.1/5578
Bibliographic Citation: Aad, G., B. Abbott, J. Abdallah, O. Abdinov, et al. 2016. "Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at √s̅ = 8 TeV with the ATLAS detector." European Physical Journal C 76(2), doi:10.1140/epjc/s10052-017-5089-x
Terms of Use: CC BY 4.0 (Attribution)
©2016 CERN, for the ATLAS Collaboration

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CC BY 4.0 (Attribution) Except where otherwise noted, this item's license is described as CC BY 4.0 (Attribution)