deletions | additions       diff --git a/eventSelection.tex b/eventSelection.tex  index a816288..ea0c688 100644  --- a/eventSelection.tex  +++ b/eventSelection.tex 
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Each event is processed using a global event reconstruction algorithm which reconstructs and indentifies the particles using information from all of the subdetectors as described in section \ref{sect:CMS} \cite{Khachatryan_2014}. It is important to note that this algorithm relies heavily on the identifacation the particle type (photon, electron, muon, hadron) to reconstruct the trajectory of the particle \cite{Khachatryan_2014}. After events are reconstructed, they are 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, $|\eta| < 2.4$ where $\eta \equiv - \ln{\frac{\theta}{2}}$, not be an $ee$ event, and have a total minimum invariant mass of 20 GeV. A minimum isolation is also required according to the loose working points of the combined secondary vertex (CSV)algorithm. For a discussion of the various working points of the CSV  algorithmsee  \cite{Khachatryan_2014}. 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. After the primary hypothesis has been found, the hadronic jets corresponding to the event are reconstructed using the anti-$k_T$ algorithm \cite{Cacciari_2008}. The jet momentum is determined as the vector sum of all particle momenta in the jet. For this analysis, the jets considered are required to be inside the tracker acceptance ($|\eta|$ < 2.4) as well as a scaled $p_T > 20$ GeV. The primary jets are taken to be the two jets in the bundle which when paired with the leptons in the primary hypothesis, minimize the total invariant mass. This is done under the assumption that the most likely process to occur is the one with the smallest amount of $p_T$.   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.