Document Type
Article
Publication Title
Journal of High Energy Physics
Abstract
The t¯t charge asymmetry in proton-proton collisions at p s = 7TeV is measured using the dilepton decay channel (ee, eμ, or μμ). The data correspond to a total integrated luminosity of 5.0 fb−1, collected by the CMS experiment at the LHC. The t¯t and lepton charge asymmetries, defined as the differences in absolute values of the rapidities between the reconstructed top quarks and antiquarks and of the pseudorapidities between the positive and negative leptons, respectively, are measured to be AC = −0.010 ± 0.017 (stat.) ± 0.008 (syst.) and Alep C = 0.009 ± 0.010 (stat.) ± 0.006 (syst.). The lepton charge asymmetry is also measured as a function of the invariant mass, rapidity, and transverse momentum of the t¯t system. All measurements are consistent with the expectations of the standard model.
DOI
doi.org/10.1007/JHEP04(2014)191
Publication Date
2014
Recommended Citation
The CMS collaboration., Chatrchyan, S., Khachatryan, V. et al. Measurements of the charge asymmetry using the dilepton decay channel in pp collisions at s = 7 TeV. J. High Energ. Phys. 2014, 191 (2014). https://doi.org/10.1007/JHEP04(2014)191