NPA Seminar, Simon Foreman, Perimeter Institute, "Detection of Cosmological 21cm Emission with CHIME"

Abstract: Intensity mapping of redshifted 21cm emission from neutral hydrogen holds great promise for learning about cosmology, as it provides an efficient way to map large volumes of the universe without the need to characterize individual luminous sources. The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a cylinder telescope located in Western Canada that was custom-built for this purpose, and that has collected several hundred days’ worth of data since it reached full observational capacity in late 2018.

WIDG Seminar, London Cooper-Troendle, Yale, “Extraction of an Inclusive Muon Neutrino Charged Current Differential Cross Section at MicroBooNE”

The MicroBooNE detector is a Liquid Argon Time Projection Chamber (LArTPC) located along the Booster Neutrino Beam (BNB) at Fermilab. One of its key physics goals is the measurement of neutrino-Argon interaction cross sections. Due to the detector’s fully active volume as well as its capability to offer a high-efficiency neutrino event selection, MicroBooNE is well suited produce the first ever triple-differential neutrino-Argon cross section.

The Kimball Smith Series, Sasha Brown, Marynel Vázquez, Wendall Wallach, "AI Ethics on the Global Stage"

AI Ethics on the Global Stage
Join us on Tuesday, November 30th, 2021 at 4 PM in Watson Center (WTS) A74 for a moderated panel followed by small group discussions about artificial intelligence in the contemporary global climate.
The panel will feature experts Wendall Wallach (Interdisciplinary Center for Bioethics), Sasha Brown (World Fellows Program) and Marynel Vázquez (Interactive Machines Group).
Attendees will learn about how AI works and is applied, key recent innovations, current ethical questions, and AI’s impact on the global economy and politics.

NPA Seminar, Jay Hyun Jo, Yale University, “First search for an excess of electron neutrinos in MicroBooNE”

We present a measurement of electron-neutrino interactions from the Fermilab Booster Neutrino Beam using the MicroBooNE liquid argon time projection chamber to address the nature of the excess of low-energy interactions observed by the MiniBooNE collaboration. Three independent electron-neutrino searches are performed across multiple single-electron final states, including an exclusive search for two-body scattering events with a single proton, a semi-inclusive search for pionless events, and a fully inclusive search for events containing all hadronic final states.

Dissertation Defense: David Stewart, Yale University, "Jet to Event Activity Correlations in Small System Collisions at STAR"

Heavy ion collisions at the LHC and RHIC produce a quark gluon plasma (QGP), in which quarks and gluons are deconfined into an extended medium. This “fourth phase” of matter is also believed to have been the first material phase of the universe following the Big Bang. In experiment, high energy partons scatter at short time scales and may subsequently lose energy, or are “quenched”, via interactions with the QGP.

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