Event Title

Elimination of Background in the Lepton Jet Analysis through the Application of Relative Isolation Cuts

Session Number

Project ID: PHYS 16

Advisor(s)

Dr. Peter Dong, Illinois Mathematics and Science Academy

Discipline

Physical Science

Start Date

20-4-2022 9:10 AM

End Date

20-4-2022 9:25 AM

Abstract

We look through data generated from a Monte-Carlo simulation in order to analyze exotic interactions, meaning those outside of the standard model. Our analysis is divided into two primary searches, with one focused on the doubly-charged Higgs boson, and the other examining dark photon decay. This project focused primarily on the dark photons, specifically the lepton jets that result from their decay. I worked to decrease the background of the lepton jet analysis, which consists of lepton jets resulting from hadronization and other processes unrelated to dark photon decay. The analysis focused on two potential variables that had could be used for cuts to eliminate background, namely hadronic energy and relative isolation. While hadronic energy did not yield any noticeable results, with different values of it being dispersed rather equally throughout the background and the signal, relative isolation showed a positive correlation with our signal. Thus, any lepton jets below a certain relative isolation could successfully be eliminated.

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Apr 20th, 9:10 AM Apr 20th, 9:25 AM

Elimination of Background in the Lepton Jet Analysis through the Application of Relative Isolation Cuts

We look through data generated from a Monte-Carlo simulation in order to analyze exotic interactions, meaning those outside of the standard model. Our analysis is divided into two primary searches, with one focused on the doubly-charged Higgs boson, and the other examining dark photon decay. This project focused primarily on the dark photons, specifically the lepton jets that result from their decay. I worked to decrease the background of the lepton jet analysis, which consists of lepton jets resulting from hadronization and other processes unrelated to dark photon decay. The analysis focused on two potential variables that had could be used for cuts to eliminate background, namely hadronic energy and relative isolation. While hadronic energy did not yield any noticeable results, with different values of it being dispersed rather equally throughout the background and the signal, relative isolation showed a positive correlation with our signal. Thus, any lepton jets below a certain relative isolation could successfully be eliminated.