Twenty sets of simulated data, showing number of events versus the “mass” of a putative particle, in GeV/c2. Each contains about 40 events of a non-Higgs-like background that is flat in mass.  Some but not all plots contain a signal which is in the form of a peak, comparable to the current size of the expected Higgs particle signal (about 20 events). In each case the mass of the Higgs is chosen between 122 and 127 GeV/c2.  Experimental imperfections make the full-width of the signal peak at half its maximum about 4 GeV/c2 wide.

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