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T: Fachverband Teilchenphysik

T 101: Top Quark V (Wirkungsquerschnitte)

T 101.1: Vortrag

Donnerstag, 3. März 2016, 16:45–17:00, VMP9 HS

Measurements of jets produced in top quark events using the di-lepton final state with 2 b-tagged jets in pp collisions at a centre-of-mass energy of 13 TeV with the ATLAS detector — •Christoph Eckardt — DESY, Zeuthen, Deutschland

In this talk the measurements of the normalized differential cross-sections of top-quark pair production are presented at a centre-of-mass energy of 13 TeV with the ATLAS detector. The tt production with additional jets is a dominant background to the measurements of certain Higgs boson production processes and decay modes and to many searches for new physics phenomena. The aim of this analysis is to test Monte Carlo predictions by making a direct measurement of jet activity in tt events. The measurements use events with a pair of oppositely charged leptons and two b-tagged jets in the final state. The data are corrected to obtain the particle-level fiducial cross sections.