Same Sign Lepton Jet Filtering for Usage in Control Region Calculation
Session Number
Project ID: PHYS 31
Advisor(s)
Dr. Peter J. Dong, Illinois Mathematics and Science Academy
Discipline
Physical Science
Start Date
17-4-2024 8:35 AM
End Date
17-4-2024 8:50 AM
Abstract
Some current dark sector theories predict the existence of a dark photon that interacts with the Standard Model (SM) particles through kinetic mixing. Searching for the existence of the dark photon could have implications for understanding the nature of dark matter and the legitimacy of the theories predicting it. Dark photons are theorized to primarily decay into lepton jets. Our background comes primarily through Drell-Yan interactions. In both scenarios, the leptons in the jets produced must be of opposite charge. However, since Drell-Yan occurs very rarely at the low energy levels of dark photons, much of the background is caused by factors such as charge mismeasurement, photon fakes, or pileup events. In our analysis, we look into the effects on the sensitivity of our Monte Carlo simulations based on the implementation of an opposite-sign lepton jet filter. We further analyze the properties of same-sign lepton jets to use for a potential control region.
Same Sign Lepton Jet Filtering for Usage in Control Region Calculation
Some current dark sector theories predict the existence of a dark photon that interacts with the Standard Model (SM) particles through kinetic mixing. Searching for the existence of the dark photon could have implications for understanding the nature of dark matter and the legitimacy of the theories predicting it. Dark photons are theorized to primarily decay into lepton jets. Our background comes primarily through Drell-Yan interactions. In both scenarios, the leptons in the jets produced must be of opposite charge. However, since Drell-Yan occurs very rarely at the low energy levels of dark photons, much of the background is caused by factors such as charge mismeasurement, photon fakes, or pileup events. In our analysis, we look into the effects on the sensitivity of our Monte Carlo simulations based on the implementation of an opposite-sign lepton jet filter. We further analyze the properties of same-sign lepton jets to use for a potential control region.