LHC Seminar

Recent ATLAS results on inclusive and differential top quark production

by Alison Lister (University of British Columbia (CA))

Europe/Zurich
222/R-001 (CERN)

222/R-001

CERN

41
Show room on map
Description

Recent results from measurements of top quark pair and single top production by the ATLAS experiment are presented. Final inclusive and differential results from Run 1 are shown along with a first look at the 13 TeV data. Measurements of single top quark production in all three possible modes have been performed at ATLAS at 8 TeV. The first 13 TeV data was used to measure the t-channel production cross section, showing good agreement with the prediction. The Run 1 data was used to measure particle and parton level differential cross sections in top-pair events over a wide range of phase-space up to high masses, high momentum or high jet multiplicity. These results are compared to state-of-the-art NLO Monte Carlo predictions. A number of parton level results are compared to recent NNLO differential distributions, which show good agreement with the data. Results in both the lepton-plus-jets and dilepton channels are shown. The 2015 data at 13 TeV has allowed us to measure the additional jet multiplicity in dilepton events at a new centre-of-mass energy. The Run 2 data has also allowed measurements of the production of top quark pairs in association with an additional weak boson. Finally, a measurement of the top pair production cross section in events with one electron and one muon is presented; its precision is on a par with that of the NNLO+NNLL calculations.

Organized by

M. Mangano, C. Lourenço, G. Unal......................... Refreshments will be served at 10h30

Webcast
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