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DTSTART:20210101T000000
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DTSTART;TZID=UTC:20211122T150000
DTEND;TZID=UTC:20211122T160000
DTSTAMP:20260424T103350
CREATED:20211116T221930Z
LAST-MODIFIED:20211116T221947Z
UID:1747-1637593200-1637596800@rpm.physics.lbl.gov
SUMMARY:Dominique Trischuk (University of British Columbia) "Displaced Vertex Search for Heavy Neutral Leptons with the ATLAS Detector"
DESCRIPTION:Abstract:  \nThis seminar will present recent results of a search for long-lived heavy neutral leptons (HNLs) in proton-protoncollisions at the Large Hadron Collider (LHC). The Standard Model (SM) of particle physics is an extremely successful theory and its major predictions have been precisely confirmed. However\, the existence of neutrinos\, with small nonzero masses\, provides evidence that the SM is incomplete. Introducing HNLs into the SM is a natural wayto generate the light neutrino masses through a seesaw mechanism. This search uses 139 fb -1 of ATLAS experimental data collected between 2015 and 2018 at a centre-of-mass energy of 13 TeV. A non-standard techniqueis used to search for a displaced vertex from particle trajectories produced in the HNL decay to leptons. The dominant background from uncorrelated leptons crossing in the ATLAS detector is estimated using an objectshuffling method. The reconstructed HNL mass is used to discriminate between signal and background. No excessof events is observed and constraints on the strength of the interactions between HNLs and neutrinos are imposed in various scenarios. \nThis seminar will conclude with a presentation of methods used to study the detector performance and readout system of the ATLAS Inner Tracker (ITk). The LHC is currently undergoing upgrades that will enable it to produce more than ten times the data that has already been collected. To meet the requirements of this challenging new environment\, an all-silicon particle tracking system will be installed in ATLAS. \n\n\n──────────\nTroy Cortez is inviting you to a scheduled Zoom meeting.Join Zoom Meeting\nhttps://lbnl.zoom.us/j/98663061529?pwd=UjcrMktySE15dHo2aFB0d1R4QjBBQT09 \nMeeting ID: 986 6306 1529\nPasscode: 257822\nOne tap mobile\n+16699006833\,\,98663061529#\,\,\,\,*257822# US (San Jose)\n+13462487799\,\,98663061529#\,\,\,\,*257822# US (Houston) \nDial by your location\n+1 669 900 6833 US (San Jose)\n+1 346 248 7799 US (Houston)\n+1 253 215 8782 US (Tacoma)\n+1 646 558 8656 US (New York)\n+1 301 715 8592 US (Washington DC)\n+1 312 626 6799 US (Chicago)\nMeeting ID: 986 6306 1529\nPasscode: 257822\nFind your local number: https://lbnl.zoom.us/u/ac5QlnwbVX \nJoin by SIP\n98663061529@zoomcrc.com \nJoin by H.323\n162.255.37.11 (US West)\n162.255.36.11 (US East)\n115.114.131.7 (India Mumbai)\n115.114.115.7 (India Hyderabad)\n213.19.144.110 (Amsterdam Netherlands)\n213.244.140.110 (Germany)\n103.122.166.55 (Australia Sydney)\n103.122.167.55 (Australia Melbourne)\n64.211.144.160 (Brazil)\n69.174.57.160 (Canada Toronto)\n65.39.152.160 (Canada Vancouver)\n207.226.132.110 (Japan Tokyo)\n149.137.24.110 (Japan Osaka)\nMeeting ID: 986 6306 1529\nPasscode: 257822 \n──────────
URL:https://rpm.physics.lbl.gov/event/dominique-trischuk-university-of-british-columbia-displaced-vertex-search-for-heavy-neutral-leptons-with-the-atlas-detector/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
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