The normalized differential cross section for top quark pair (tt⎯⎯tt¯) production is measured in pp collisions at a centre-of-mass energy of 8TeVTeV at the CERN LHC using the CMS detector in data corresponding to an integrated luminosity of 19.7fb−1fb−1. The measurements are performed in the lepton++jets (e/μe/μ ++jets) and in the dilepton (e+e−e+e−, μ+μ−μ+μ−, and e±μ∓e±μ∓) decay channels. The tt⎯⎯tt¯ cross section is measured as a function of the kinematic properties of the charged leptons, the jets associated to b quarks, the top quarks, and the tt⎯⎯tt¯ system. The data are compared with several predictions from perturbative quantum chromodynamic up to approximate next-to-next-to-leading-order precision. No significant deviations are observed relative to the standard model predictions.
Measurement of the differential cross section for top quark pair production in pp collisions at sqrt(s)=8 TeV
Sola, V.;AMAPANE, Nicola Carlo;ARGIRO', Stefano;BELLAN, Riccardo;COSTA, Marco;MIGLIORE, Ernesto;MONACO, Vincenzo;OBERTINO, Maria Margherita;ROMERO, Alessandra;SACCHI, Roberto;SOLANO, Ada Maria;COVARELLI, Roberto;
2015-01-01
Abstract
The normalized differential cross section for top quark pair (tt⎯⎯tt¯) production is measured in pp collisions at a centre-of-mass energy of 8TeVTeV at the CERN LHC using the CMS detector in data corresponding to an integrated luminosity of 19.7fb−1fb−1. The measurements are performed in the lepton++jets (e/μe/μ ++jets) and in the dilepton (e+e−e+e−, μ+μ−μ+μ−, and e±μ∓e±μ∓) decay channels. The tt⎯⎯tt¯ cross section is measured as a function of the kinematic properties of the charged leptons, the jets associated to b quarks, the top quarks, and the tt⎯⎯tt¯ system. The data are compared with several predictions from perturbative quantum chromodynamic up to approximate next-to-next-to-leading-order precision. No significant deviations are observed relative to the standard model predictions.| File | Dimensione | Formato | |
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