Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 77: Top Quark IV (single top, FCNC)

T 77.5: Talk

Wednesday, March 2, 2016, 17:45–18:00, VMP9 HS

Wt-channel cross section measurement in single top quark production with the ATLAS detector at √s=13 TeV — •Rui Zhang, Regina Moles Valls, and Ian C. Brock — Physikalisches Institut, Universität Bonn

The inclusive production cross-section for the associated production of a W boson and a top quark is measured using data from proton–proton collision at a centre of mass energy 13 TeV collected in 2015 by the ATLAS detector at the Large Hadron Collider at CERN. Events are separated into signal and control regions based on the number of jets and the number of jets which are identified as containing b-hadrons. The Wt signal is separated from the tt background using a boosted decision tree discriminant. The cross-section is extracted by fitting Monte Carlo templates to the data distributions. A measurement of the fiducial cross-section is also performed.