Measurement of differential top-quark-pair production cross sections in pp collisions at √s =7 TeV
- CMS Collaboration
- Chatrchyan, Serguei
- Bäni, Lukas
- Bortignon, Pierluigi
- Buchmann, Marco A.
- Casal, Bruno
- Chanon, Nicolas
- Deisher, Amanda
- Dissertori, Günther
- Dittmar, Michael
- Donegà, Mauro
- Dünser, Marc
- Eugster, Jürg
- Freudenreich, Klaus
- Grab, Christoph
- Hits, Dmitry
- Lecomte, Pierre
- Lustermann, Werner
- Marini, Andrea C.
- Martinez Ruiz del Arbol, Pablo
- Mohr, Niklas
- Moortgat, Filip
- Nägeli, Christoph
- Nef, Pascal
- Nessi-Tedaldi, Francesca
- Pandolfi, Francesco
- Pape, Luc
- Pauss, Felicitas
- Peruzzi, Marco
- Ronga, Frédéric J.
- Rossini, Marco
- Sala, Leonardo
- Sanchez, Ann-Karin
- Starodumov, Andrey
- Stieger, Benjamin
- Takahashi, Maiko
- Tauscher, Ludwig
- Thea, Alessandro
- Theofilatos, Konstantinos
- Treille, Daniel
- Urscheler, Christina
- Wallny, Rainer
- Weber, Hannsjörg A.
- Wehrli, Lukas
- et al.
DOIAbstract
Normalised differential top-quark-pair production cross sections are measured in pp collisions at a centre-of-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 μ+jets) and the dilepton decay channels (e+e−, μ + μ −, and μ ±e∓). The tt¯ 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 tt¯ system. The data are compared with several predictions from perturbative QCD calculations up to approximate next-to-next-to-leading-order precision. No signifi...
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