Measurements of top quark pair relative differential cross-sections with ATLAS in pp collisions at √s = 7 TeV
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Date
2013Author
Çakır, Orhan
Çiftçi, A. Kenan
Çiftçi, R.
Kuday, S
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Measurements are presented of differential crosssections for top quark pair production in pp collisions at
√s = 7 TeV relative to the total inclusive top quark pair production cross-section. A data sample of 2.05 fb−1 recorded
by the ATLAS detector at the Large Hadron Collider is used.
Relative differential cross-sections are derived as a function
of the invariant mass, the transverse momentum and the rapidity of the top quark pair system. Events are selected in the
lepton (electron or muon) + jets channel. The backgroundsubtracted differential distributions are corrected for detector effects, normalized to the total inclusive top quark pair
production cross-section and compared to theoretical predictions. The measurement uncertainties range typically between 10 % and 20 % and are generally dominated by systematic effects. No significant deviations from the Standard
Model expectations are observed.