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        "datetime_modified":"20260922T140247",
        "datetime_start":"20261005T150000",
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        "event_title":"HEP-Astro Seminar | Low-Energy Physics in Liquid Argon Time Projection Chamber Neutrino Detectors",
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        "combined_title":"HEP-Astro Seminar | Low-Energy Physics in Liquid Argon Time Projection Chamber Neutrino Detectors: Bryce Littlejohn (Illinois Institute of Technology)",
        "event_subtitle":"Bryce Littlejohn (Illinois Institute of Technology)",
        "event_type":"Workshop \/ Seminar",
        "event_type_id":"21",
        "description":"Liquid argon time projection chamber (LArTPC) detectors have become the global technology of choice for performing neutrino flavor oscillation measurements with accelerator neutrino beams.  The millimeter-precision 3D images these detectors produce contain meters-long tracks and showers generated by neutrino interaction products, as well as mm-scale blips generated by isolated MeV-scale energy depositions.  While GeV track and shower features have been extensively leveraged for oscillation and neutrino-nucleus cross-section measurements, MeV-scale blip features are comparatively under-studied, despite their ability to uniquely access a range of physics and astrophysics signatures.  In this talk, I will overview the physics benefits of MeV-scale reconstruction in neutrino LArTPCs, including solar and supernova neutrino burst detection, improved particle identification and hadronic calorimetry for beam neutrino measurements, and more.  I will also present work performed by the LArTPC-focused Littlejohn Neutrino research Group experiment at IIT that has created new low-energy LArTPC reconstruction tools, demonstrated new MeV-scale LArTPC physics capabilities, and performed new particle physics measurements relying on these new techniques.",
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    {
        "datetime_modified":"20260923T131538",
        "datetime_start":"20261012T150000",
        "datetime_end":"20261012T160000",
        "has_end_time":1,
        "date_start":"2026-10-12",
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        "time_zone":"America\/Detroit",
        "event_title":"HEP-Astro Seminar | Does the Higgs boson talk to itself? The latest ATLAS search for di-Higgs production in the HH\u2192bb\u03c4\u03c4 decay channel",
        "occurrence_title":"",
        "combined_title":"HEP-Astro Seminar | Does the Higgs boson talk to itself? The latest ATLAS search for di-Higgs production in the HH\u2192bb\u03c4\u03c4 decay channel: Greg Myers (U-M Physics)",
        "event_subtitle":"Greg Myers (U-M Physics)",
        "event_type":"Workshop \/ Seminar",
        "event_type_id":"21",
        "description":"The Higgs boson, the most recently discovered particle in the Standard Model, is predicted to be an elementary scalar boson which can interact with itself -- an interaction which has yet to be experimentally observed. Measuring the strength of the Higgs self-interaction could tell us if the Higgs is a composite particle, about the shape of the Higgs potential, and further illuminate the details of Electroweak Symmetry-Breaking. By searching for proton--proton collisions at the Large Hadron Collider which produce two Higgs bosons at the same time, we can directly probe the Higgs trilinear self-coupling. In this talk, I will motivate and present results from the latest ATLAS search for di-Higgs production in the HH\u2192bb\u03c4\u03c4 (two b-quarks and two tau leptons) decay channel, the most sensitive search of its kind to date, and the prospects for ATLAS di-Higgs measurements.",
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