The Effectiveness of a Localized b-Jet Veto for Improving Lepton Jet Reconstruction

Session Number

Project ID: PHYS 14

Advisor(s)

Dr. Peter Dong; Illinois Mathematics and Science Academy

Discipline

Physical Science

Start Date

19-4-2023 9:35 AM

End Date

19-4-2023 9:50 AM

Abstract

Using the identification of jets originating from b quarks, we eliminate a source of background in our search for the dark photon. These “b-tagged” jets often contain lepton pairs that are similar to the decay of dark photons. A veto against these jets further isolates the dark photon signal, aiding in analysis. The extent to which efficiency changes due to the veto is compiled. Additionally, b- tagged jets in proximity to other leptons are exclusively filtered which makes vetoing considered in a fewer number of necessary cases. The framework is updated with an “Info Map” to support adding variables, such as the b-jet tag, that are utilized during analysis.

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Apr 19th, 9:35 AM Apr 19th, 9:50 AM

The Effectiveness of a Localized b-Jet Veto for Improving Lepton Jet Reconstruction

Using the identification of jets originating from b quarks, we eliminate a source of background in our search for the dark photon. These “b-tagged” jets often contain lepton pairs that are similar to the decay of dark photons. A veto against these jets further isolates the dark photon signal, aiding in analysis. The extent to which efficiency changes due to the veto is compiled. Additionally, b- tagged jets in proximity to other leptons are exclusively filtered which makes vetoing considered in a fewer number of necessary cases. The framework is updated with an “Info Map” to support adding variables, such as the b-jet tag, that are utilized during analysis.