Alec Aivazis edited eventSelection.tex  over 9 years ago

Commit id: c16b1a9e043a68848e10832a9c81b5053ca36f9e

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Events were selected from an online dilepton trigger ($ee$, $e\mu$, $\mu e$, and $\mu\mu$) which require the tranverse momentum ($p_T$) of the largest lepton to be greater than 17 GeV and the smaller to be greater than 8 GeV.  The reconstructed trajectories (known as hypotheses) are then grouped together according to the location in the LHC where the interaction occured. This is done to prevent particles that originated in other interactions (pileup) from being considered as part of the final state. Each hypothesis is restricted to having $p_T >$ 20 GeV, oppositely charged leptons, $\abs{\eta} $|\eta|  < 2.4$ where $\eta \equiv - \ln{\frac{\theta}{2}}$, GeV The hypothesis with the highest combined $p_T$ bewtween the two leptons that passes these criteria is then taken to be the primary interaction at the corresponding LHC bunch crossing. Events where then identified