Abstract
Standard Model (SM) is a widely-accepted particle model due to its various successful predictions. However, there are still problems that SM cannot be solved, leaving room for other Beyond Standard Models. Supersymmetry, one of the most promising SM extensions, provides ways to answer several open questions. The search for the pair production of chargino and neutralino and the pair production of gluinos using Run-3 data are well motivated with the final states of two same-sign leptons and three leptons. The tt ̅ backgrounds are dominated in these two signal models. This type of background can be understood better with the analysis of lepton compositions in tt ̅ Run3 MC file. Any possible new discriminant variables can be proposed and employed to enhance the sensitivity of the region of interest in our search.
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