Measurement of Single-top Quark Production with ATLAS

We use 2011 data from the ATLAS detector to isolate the production of single-top quarks. This electroweak top-quark production is expected to be sensitive to new physics such as flavor changing neutral currents or W' production, and can also be an important background for processes like the Higgs boson production. The data for this analysis are collected from collisions occurring at 7 TeV center-of-mass energy and then several selections are applied to these events. The selections are determined from studies of simulated events and chosen to isolate the signal while removing background events, based on the kinematic signature of the single-top quark process. We report the measurement of the t-channel single-top cross-section. We also discuss the likelihood that a selected sample of data events are Wt single-top quark events and that a separate selected sample of data events are s-channel single-top quark events.