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T: Fachverband Teilchenphysik

T 82: Eingeladene Vorträge 4

T 82.1: Eingeladener Vortrag

Donnerstag, 12. März 2015, 13:45–14:15, K.11.24 (HS 33)

Measurements of Top Quark Pair Production with the CMS Experiment — •Carmen Diez Pardos — DESY, Hamburg, Germany

The top quark is the heaviest known elementary particle and the only quark that decays before hadronisation, and thus gives direct access to its properties. With its large mass, it plays a crucial role for testing the quality of the Standard Model (SM) and plays a key role in the measurement of the Higgs boson properties. Top quark measurements also provide important input to QCD calculations. Moreover, various scenarios of physics beyond the SM expect the top quark to couple to new particles.

The large data samples collected at the CERN LHC at a centre-of-mass energy of 7 and 8 TeV have allowed performing very precise measurements of top quark production and properties, challenging the accuracy of the state-of-the-art SM theoretical predictions. In this presentation, I will review the current status of top-quark-pair (tt) production measurements performed with the CMS experiment, focusing on inclusive and differential tt production cross sections, as well as tt production in association with jets or additional bosons.