Inclusive and differential measurements of the t[bar over t] charge asymmetry in proton-proton collisions at √s = 7 TeV
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Chatrchyan-2012-Inclusive and differ.pdf
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Author(s)
Apyan, Aram
Bendavid, Joshua L.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
Chan, M.
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Hahn, Kristian Allan
Kim, Y.
Date Issued
September 2012
Journal
Physics Letters B
Publisher
Elsevier
Citation
Chatrchyan, S., V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, E. Aguilo, T. Bergauer, et al. “Inclusive and Differential Measurements of the t[bar over t] Charge Asymmetry in Proton-Proton Collisions at √s = 7 TeV.” Physics Letters B 717, no. 1–3 (October 2012): 129–150. © 2012 CERN
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Final published version
Abstract
The t[bar over t] charge asymmetry is measured in events containing a charged lepton (electron or muon) and at least four jets, one of which is identified as originating from b-quark hadronization. The analyzed dataset corresponds to an integrated luminosity of 5.0 fb[superscript −1] collected with the CMS detector at the LHC. An inclusive and three differential measurements of the t[bar over t] charge asymmetry as a function of rapidity, transverse momentum, and invariant mass of the t[bar over t] system are presented. The measured inclusive t[bar over t] charge asymmetry is A[subscript C]=0.004±0.010(stat.)±0.011(syst.). This result and the three differential measurements are consistent with zero asymmetry as well as with the predictions of the standard model.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. School of Science
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2012.09.028
