Key points are not available for this paper at this time.
Normalised differential top-quark-pair production cross sections are measured in pp collisions at a centreof-mass energy of 7 TeVat the LHC with the CMS detector using data recorded in 2011 corresponding to an integrated luminosity of 5.0 fb -1 . The measurements are performed in the lepton + jets decay channels (e + jets and + jets) and the dilepton decay channels (e + e -, + -, and e ). The t t differential cross section is measured as a function of kinematic properties of the final-state charged leptons and jets associated to b quarks, as well as those of the top quarks and the t t system. The data are compared with several predictions from perturbative QCD calculations up to approximate next-to-next-to-leading-order precision. No significant deviations from the standard model are observed.
Chatrchyan et al. (Fri,) studied this question.