Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5465
Title: Measurements of the tt¯ charge asymmetry using the dilepton decay channel in pp collisions at s = 7 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Decays
Asymmetry
Top quarks
Issue Date: Apr-2014
Publisher: Springer Verlag
Source: Chatrchyan, S., Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Erö, J., ...CMS Collaboration (2014). Measurements of the tt̄ charge asymmetry using the dilepton decay channel in pp collisions at s = 7 TeV. Journal of High Energy Physics, 2014(4). doi:10.1007/JHEP04(2014)191
Abstract: The tt̄ charge asymmetry in proton-proton collisions at 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 tt̄ 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 AC lep = 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 tt̄ system. All measurements are consistent with the expectations of the standard model.
URI: http://doi.org/10.1007/JHEP04(2014)191
http://hdl.handle.net/11147/5465
ISSN: 1029-8479
Appears in Collections:Mathematics / Matematik
Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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