{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/127162"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/127162","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"A search for displaced lepton and track triggers at the ATLAS experiment at the Large Hadron Collider","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms","abstract_has_math":false,"creators":["Zheng, Kai"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Benjamin, Hooberman","Peng, Jen-Chieh","Shelton, Jessie","Cooper, Lance"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2024,"date_issued":"2024-10-30","date_published":"2024-10-30","updated_at":"2026-07-22T22:25:03Z","subjects":["Particle Physics","High Energy Physics","Lhc","Atlas","Cern","Supersymmetry","Physics Analysis","Trigger System","Pattern Recognition","Lepton Isolation"],"languages":["en","eng"],"rights":["Copyright 2024 Kai Zheng"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/127162","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Benjamin, Hooberman","Peng, Jen-Chieh","Shelton, Jessie","Cooper, Lance"]},{"key":"dc:creator","label":"Author","values":["Zheng, Kai"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2024-10-30","2024-12"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Particle Physics","High Energy Physics","Lhc","Atlas","Cern","Supersymmetry","Physics Analysis","Trigger System","Pattern Recognition","Lepton Isolation"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2024 Kai Zheng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/127162"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms","The student, Kai Zheng, accepted the attached license on 2024-10-21 at 12:14.","The student, Kai Zheng, submitted this Dissertation for approval on 2024-10-21 at 12:29.","This Dissertation was approved for publication on 2024-10-30 at 16:07.","DSpace SAF Submission Ingestion Package generated from Vireo submission #21263 on 2025-03-28 at 14:25:10","This thesis describes searches for beyond-the-Standard-Model (BSM) physics within the ATLAS Collaboration at the Large Hadron Collider (LHC), with a focus on displaced leptons and advanced tracking techniques. Displaced leptons, which are not consistent with originating from the primary interaction point, can arise from long-lived particles predicted by BSM theories such as supersymmetry (SUSY), offering a distinctive signature for BSM physics. Three projects are described with the aim of improving the search for BSM signals. The first project involves the search for displaced leptons using the latest LHC Run 3 data collected from 2022 to 2023 with the ATLAS detector, targeting BSM scenarios including SUSY. The second project applies a method called the Hough transform for displaced track pattern recognition to optimize the trigger system for the High-Luminosity LHC (HL-LHC) upgrade that will be performed from 2026 to 2030. The third project explores the use of deep learning techniques to improve the identification of low transverse-momentum leptons, enhancing the efficiency of detecting BSM scenarios that introduce new particles with small mass differences between them. Collectively, these projects advance the search for BSM physics in final states with leptons at the ATLAS experiment at LHC."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["A search for displaced lepton and track triggers at the ATLAS experiment at the Large Hadron Collider"]}]}],"canonical_facts":{"dc:contributor":["Benjamin, Hooberman","Peng, Jen-Chieh","Shelton, Jessie","Cooper, Lance"],"dc:creator":["Zheng, Kai"],"dc:date":["2024-10-30","2024-12"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms","The student, Kai Zheng, accepted the attached license on 2024-10-21 at 12:14.","The student, Kai Zheng, submitted this Dissertation for approval on 2024-10-21 at 12:29.","This Dissertation was approved for publication on 2024-10-30 at 16:07.","DSpace SAF Submission Ingestion Package generated from Vireo submission #21263 on 2025-03-28 at 14:25:10","This thesis describes searches for beyond-the-Standard-Model (BSM) physics within the ATLAS Collaboration at the Large Hadron Collider (LHC), with a focus on displaced leptons and advanced tracking techniques. Displaced leptons, which are not consistent with originating from the primary interaction point, can arise from long-lived particles predicted by BSM theories such as supersymmetry (SUSY), offering a distinctive signature for BSM physics. Three projects are described with the aim of improving the search for BSM signals. The first project involves the search for displaced leptons using the latest LHC Run 3 data collected from 2022 to 2023 with the ATLAS detector, targeting BSM scenarios including SUSY. The second project applies a method called the Hough transform for displaced track pattern recognition to optimize the trigger system for the High-Luminosity LHC (HL-LHC) upgrade that will be performed from 2026 to 2030. The third project explores the use of deep learning techniques to improve the identification of low transverse-momentum leptons, enhancing the efficiency of detecting BSM scenarios that introduce new particles with small mass differences between them. Collectively, these projects advance the search for BSM physics in final states with leptons at the ATLAS experiment at LHC."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/127162"],"dc:language":["en","eng"],"dc:rights":["Copyright 2024 Kai Zheng"],"dc:subject":["Particle Physics","High Energy Physics","Lhc","Atlas","Cern","Supersymmetry","Physics Analysis","Trigger System","Pattern Recognition","Lepton Isolation"],"dc:title":["A search for displaced lepton and track triggers at the ATLAS experiment at the Large Hadron Collider"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:03Z"}