deletions | additions       diff --git a/eventSelection.tex b/eventSelection.tex  index 55c6143..4adbe0d 100644  --- a/eventSelection.tex  +++ b/eventSelection.tex 
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Once the event jets have been reconstructed, the collection of primary hypotheses are then restricted to those events with a $p_T > 20$ GeV as well as requiring at least 2 jets to have passed the criteria above. A minimum combined invariant mass of 20 GeV as well as a minimum difference in mass between the two pairings of 100 GeV is set to prevent events containing fakes and photons to be considered in the analysis.   In order to prevent events originating from a process similar to Drell-Yan, a z-veto was added to the selection criteria by restricting events to having a combined invariant momentum that does not fall within 15 GeV of the mass of the Z-boson (approx 91 GeV).   For analysis in which the mass of the supersymmetric top was less than 700 GeV, the events were required to have an average invariant mass of the lepton/jet pair within 50 GeV of the stop mass, met <= 60 GeV and at least 1 b-tagged jets. For analyses where $m_\mathrm{stop}$ is at least 700 GeV, the b-tag requirement was increased to at least 2 such jets. jets, as this produced a better signal to background event ratio.  For computations that try to encapsulate the behavior of the algorithms (see sect \ref{sect:background} for more information) two separate control regions were considered. The $dy$ dominated control region required to have an average mass of the lepton/jet pair < 250, missing energy >= 60 and at least 2 of the jets reconstructed must be b-tagged according to the CSV-L algorithm. By requiring two b-tagged jets the control region is restricted to those final states which closely resemble my target decay. And the $tt$ dominated region required the same cuts with an inverted met requirement.