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Top quark pair property measurements using the ATLAS detector at the LHC

Mohammad Kareem
2016 Proceedings of XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2016)   unpublished

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Precise measurements of the properties of the top quark test the Standard Model (SM) and can be used to constrain new physics models. The top quark pair charge asymmetry is an asymmetry predicted to occur beyond leading-order QCD in the SM, and may be significantly enhanced by the presence of new physics. The tt production charge asymmetry is measured inclusively and differentially using the 8 TeV ATLAS dataset in the lepton+jets final state, including a dedicated measurement for highly boosted
more » ... top quarks. The results are in agreement with the SM and compared to new physics models. The top quark is predicted in the SM to decay almost exclusively to a W boson and b quark. Searches for non-SM top quark decays using the 8 TeV ATLAS dataset, including t → qH and t → qZ are presented. In addition, the measurement of the spin correlations in top quark pair production using the polar angles distribution is discussed.
doi:10.22323/1.265.0147 fatcat:zzm2m6lx6vh4dpdfhfulrdddoe
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Mohammad Kareem. "Top quark pair property measurements using the ATLAS detector at the LHC." Proceedings of XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2016) (2016)