Abstract
Differential cross sections of top-quark pair production as function of the kinematic variables of leptons, b-jets and top-quarks at particle level are measured in the dilepton decay channel with proton-proton collisions at a center-of-mass energy of 13 TeV. The measurements are performed with Run II data using the CMS detector at the Large Hadron Collider.
Highlights
The precise measurement of the ttdifferential cross section can lead to a better understanding of background contributions [1] and provides a good test of perturbative QCD calculations
The normalized ttdifferential cross section is measured in the dilepton channel as a function of the ttsystem, top quark, daughter lepton and b-jet kinematic properties such as transverse momentum, rapidity, invariant mass and azimuthal decorrelation [2]
We present the measurement at particle level with final state objects defined in a theoretically safe and unambiguous way
Summary
The precise measurement of the ttdifferential cross section can lead to a better understanding of background contributions [1] and provides a good test of perturbative QCD calculations. The normalized ttdifferential cross section is measured in the dilepton channel as a function of the ttsystem, top quark, daughter lepton and b-jet kinematic properties such as transverse momentum, rapidity, invariant mass and azimuthal decorrelation [2]. We present the measurement at particle level with final state objects defined in a theoretically safe and unambiguous way. The particle level measurements are expected to reduce the dependence on the theoretical model, so variables are mainly corrected for detector effects
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