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Time evolution of Higgs Boson Data
Animation time evolution of the data for Higgs as it was accumulated.
The Higgs signal slowly rises above the background.
These backgrounds are the direct production of two Z bosons without any Higgs involved, or from rare decays of a single Z boson to four leptons, or other such backgrounds. The Higgs boson to two Z bosons followed by their decay to four leptons has to be seen on top of these backgrounds.