In Search of Lonely Top Quarks at the Tevatron
  Single top-quark production, via weak-interaction processes, is an important test of the standard model, potentially sensitive to new physics. However, this measurement is much more challenging at the Tevatron than originally expected. We reexamine this process and suggest new methods, using shape variables, that can supplement the methods that have been discussed previously. 
Matthew T. Bowen, Stephen D. Ellis, and Matthew J. Strassler   (University of Washington)