Unravelling tth via the matrix element method.

  title={Unravelling tth via the matrix element method.},
  author={Pierre Artoisenet and Priscila de Aquino and Fabio Maltoni and Olivier Mattelaer},
  journal={Physical review letters},
  volume={111 9},
Associated production of the Higgs boson with a top-antitop pair is a key channel to gather further information on the nature of the newly discovered boson at the LHC. Experimentally, however, its observation is very challenging due to the combination of small rates, difficult multijet final states, and overwhelming backgrounds. In the standard model, the largest number of events is expected when h→bb, giving rise to a W+ W- bbbb signature, deluged in tt + jets. A promising strategy to improve… 

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