Output details

Combined search for the Standard Model Higgs boson using up to 4.9 fb−1 of pp collision data at sqrt(s)=7 TeV with the ATLAS detector at the LHC

The discovery of the Higgs boson is crucially dependent on the "golden" Higgs to ZZ to 4-lepton channel. The original design and strategy of this analysis dates back to 2006-2008 when Paganis convened the group. Novel additions to the original strategy is the determination of the significant Z+jets background which Paganis proposed and performed, the improvement of the electron performance at low energies, and the addition of QED photons (Higgs ->4l+photons). All these items increased the sensitivity of the search and were crucial to the discovery.