Measurement of Differential t Cross Sections at 7 TeV

5th International Workshop on Top Quark Physics

Görner, Martin^1

Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany^1

关键词: Differential cross section;    Event selection;    Final state;    Full informations;    High purity;    Next-to-leading orders;    Pair production;    Pp collisions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/452/1/012027/pdf
DOI  :  10.1088/1742-6596/452/1/012027

来源: IOP

【 摘 要 】

A measurement is presented of the normalized differential cross sections of top-quark pair production in pp collisions at a center of mass energy of 7 TeV, using 1.1 fb-1of data collected in 2011 by the CMS experiment. The measurement is performed using five different final states with one or two muons or electrons in the final state. The event selections yield high purity t samples. Kinematic reconstructions are performed to obtain full information of the top quarks, the t system and the final state leptons. The results are compared to several QCD predictions up to next-to-leading order.