Event Title

Lepton Selection for Dark Photons

Session Number

Project ID: PHYS 07

Advisor(s)

Dr. Peter Dong, Illinois Mathematics and Science Academy

Discipline

Physical Science

Start Date

20-4-2022 10:45 AM

End Date

20-4-2022 11:00 AM

Abstract

We study lepton selection for dark photon events using simulated Monte Carlo events, for application in the Compact Muon Solenoid experiment. We find the optimal filters and cuts to limit background events while maintaining the amount of signal events. The types of background were QCD, Drell-Yan, tt̅, diboson, and triboson. The types of filters implemented were based on invariant mass, transverse momentum, and relative isolation. We optimize the cuts with respect to sensitivity. Our process was initially to superimpose the graphs of each of these qualities to estimate the most beneficial cuts. Then, we used C++ to test the sensitivity of each possible set of cuts. We considered improvements in sensitivity of less than 10% insignificant.

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Apr 20th, 10:45 AM Apr 20th, 11:00 AM

Lepton Selection for Dark Photons

We study lepton selection for dark photon events using simulated Monte Carlo events, for application in the Compact Muon Solenoid experiment. We find the optimal filters and cuts to limit background events while maintaining the amount of signal events. The types of background were QCD, Drell-Yan, tt̅, diboson, and triboson. The types of filters implemented were based on invariant mass, transverse momentum, and relative isolation. We optimize the cuts with respect to sensitivity. Our process was initially to superimpose the graphs of each of these qualities to estimate the most beneficial cuts. Then, we used C++ to test the sensitivity of each possible set of cuts. We considered improvements in sensitivity of less than 10% insignificant.