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EPE: ATLAS Experiment

  • UW ATLAS group 2018
    UW ATLAS Group 2018 (left to right): Sam, Cristiano, Jana, Audrey, Gordon, Henry, Mason, Emma

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Research

  • The UW ATLAS group contributed significantly to the discovery of Higgs Boson in 2012. The discovery led to the Nobel Prize in Physics 2013. UW currently plays leading roles in searches for Long-lived particles, Beyond the Standard Model bosons, and Dark Matter. 
  • Henry Lubatti and Colin Daly (Mechanical Engineer Emeritus Professor) designed and developed the manufacturing specification of drift tubes for the ATLAS Forward Muon Chamber. One-third of the tubes were produced locally in Seattle, mounted to the muon chambers and shipped to CERN. 
  • Insertable B-Layer (IBL) Phase 0 Upgrade: the UW group was responsible for the design and construction of the IBL Support Tube and IBL Precision Tube, the development of the IBLROD firmware, IBL DAQ software, the commissioning, and operation of the IBL.
  • Inner Tracker (ITk) Pixel Phase 2 Upgrade: the UW group is responsible for the design and construction of the Inner Support Tube, the readout system development and production test of ITk Pixel Chip.

Faculty

  • Anna Goussiou - Beyond the Standard Model Higgs searches: di-Higgs resonance, 2 Higgs Doublet Models, MSSM Higgs 
  • Shih-Chieh Hsu - SM EWK subgroup convener (2011-12), Tracking CP convener (2015-17), BSM search in hadronic boson and Higgs final state
  • Henry Lubatti - Group leader, Exotic long-lived particle, muon chamber, IBL Support Tube, ITK
  • Gordon Watts - Exotic long-lived particle subgroup convener(2012-14), b-tagging convener (2008-10)

  • Quentin Buat - Acting Assistant Professor, Tau Trigger coordinator (2016-2017), HLeptons subgroup conveners (2017-2019), Tau working group convener (since Oct. 2020), measurements and searches with tau leptons.

Engineers/Technicians

  • Scott Hauck, UW Electrical Engineering Professor - IBL ROD firmware development

Research Scientists

Research Associates

  • Elham Khoda - Exotics Machine Learning liaison (2020-2022), Top resonance search
  • Ana Peixoto - Dark Matter search and JetETMiss CP

  • Tatiana Ovsiannikova - IRIS-HEP

Ph.D. Students

Master's S​tudents

  • ​​Lazouich Ford, M. Sc. - di-Higgs search

Selected Publications

  • ATLAS Collaboration, Search for Dark Matter Produced in Association with a Higgs Boson Decaying to b¯b Using 36 fb−1 of pp Collisions at √s=13 TeV with the ATLAS Detector, PRL 119 (2017) 181804.
  • ATLAS Collaboration, Search for Minimal Supersymmetric Standard Model Higgs bosons H/A and for a Z' boson in the tautau final state produced in pp collisions at √s=13 TeV with the ATLAS detector, Eur. Phys. J. C76 (2016) 585.
  • ATLAS Collaboration, Search for pair-produced long-lived neutral particles decaying in the ATLAS hadronic calorimeter in pp collisions at √s = 8 TeV, Physics Letters B 743 (2015) 15-34
  • ATLAS Collaboration, Search for a CP-odd Higgs boson decaying to Zh in pp collisions at √s=8 TeV with the ATLAS detector, Physics Letters B 744 (2015) 163-183
  • ATLAS Collaboration, Search for long-lived, weakly interacting particles that decay to displaced hadronic jets in proton-proton collisions at √s=8 TeV with the ATLAS detector, Phys.Rev. D92 (2015) 1, 012010
  • ATLAS Collaboration, A Particle Consistent with the Higgs Boson Observed with the ATLAS Detector at the Large Hadron Collider, Science Vol. 338 no. 6114 (2012) pp. 1576-1582
  • ALAS Collaboration, Observation of a New Particle in the Search for the Standard Model Higgs Boson with the ATLAS Detector at the LHC, PLB 716 (2012) 1-29

Ph.D. Theses

  • CERN-THESIS-2017-075 - A Search for Long-Lived Neutral Particles Decaying to Hadronic States in Proton-Proton Collisions in the ATLAS Detector at s√=8 TeV and s√=13 TeV at the LHC by Rachel Rosten, supervised by Gordon Watts
  • CERN-THESIS-2016-208 - Search for long-lived particles decaying in the muon spectrometer of the ATLAS detector at the LHC by Heather Russell, supervised by Henry Lubatti
  • CERN-THESIS-2016-228 - Searches for Beyond Standard Model Higgs Bosons in pp collisions at s√=8 and 13 TeV with the ATLAS detector by Pedro H. S. de Bruin, supervised by Anna Goussiou
  • CERN-THESIS-2015-306 - Search for Weakly-interacting, Long-lived particles that Decay to Displaced Hadronic Jets in Proton-Proton Collisions at s√ = 8 TeV with the ATLAS Detector by Daniel Blackburn, supervised by Henry Lubatti
  • CERN-THESIS-2013-381 - A Search for the Neutral Higgs Bosons of the Minimal Supersymmetric Standard Model with the ATLAS Detector at the Large Hadron Collider by John Keller, supervised by Anna Goussiou
  • CERN-THESIS-2013-129 - Search for Weakly-interacting Long-lived Particles in Proton-Proton Collisions at Sqrt(s) = 8 TeV with the ATLAS Detector by Orin Harris, supervised by Gordon Watts
  • CERN-THESIS-2012-032  - Search for Weakly-interacting Long-lived Particles in Proton-Proton Collisions at  sqrt(s) = 7 TeV with the ATLAS Detector by Daniel Ventura, supervised by Henry Lubatti
  • Thesis 2012 - Measurement of the Z-> τ τ production cross-section in proton-proton collisions at √s= 7 TeV with the ATLAS detector by Justin Griffiths, supervised by Anna Goussiou
  • Search for Dark Matter in associate production with the Higgs Boson using the ATLAS detector, by Nikola Whallon
  • CERN-THESIS-2022-061 - Search for events with two displaced vertices from pair-produced neutral long-lived particles decaying to hadronic jets in the muon spectrometer of the ATLAS detector with full Run 2 data by  Audrey Kvam supervised by Henry Lubatti<
  • CERN-THESIS-2021-247 - FASER tracker performance and electron energy resolution in the FASERν pilot detector by John Spencer, supervised by Shih-Chieh Hsu<

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