EHS Orientation for Wright Lab Shop Users - Fall 2022

Wright Lab will host 1-hour Environmental Health and Safety (EHS) Shop Orientations. The EHS shop orientation is offered each semester and is required to be taken once by anyone who would like to gain access and make use of the research and teaching shops at Wright Lab.
For more information on the shop facilities at Wright Lab see:
Register here:

WIDG Seminar: Zoltan Varga, Wigner Research Centre for Physics, "Investigating the role of the underlying event in the charm-baryon enhancement”

The factorization hypothesis states that the production cross-section of heavy-flavor hadrons can be calculated as the convolution of three independent terms: the parton distribution function of the colliding hadrons, the production cross sections of the heavy-quarks in the hard partonic process, and finally the fragmentation functions of the heavy-flavor quarks into the given heavy-flavor hadron species. The fragmentation function has been traditionally treated as universal, i.e. independent of the collision systems.

WIDG Seminar: Benjamin Siegel, Yale, “Searching for Dark Matter via a Levitated Microsphere Array”

Optically levitated masses have many applications in precision measurement, including tests of the neutrality of matter, millicharged particle searches, and dark matter detection. For such searches in which sensitivities scale with the mass or number of neutrons in the test particle, using larger, heavier spheres extends their reach. To capitalize upon this, we have used spheres with diameters on the micrometer scale in past experiments. Further improvements in sensitivity to rare events and rejection of correlated noise sources can be achieved using an array of levitated microspheres.

NPA Seminar: Jamie Karthein, MIT, “Fluctuations of Conserved Charges for QCD Phase Diagram Characterization”

Fluctuations provide a powerful tool for elucidating the nature of strongly-interacting matter in the QCD phase diagram. In heavy-ion-collision systems, the net-particle number fluctuations are captured at the moment of chemical freeze-out. Studies of the chemical freeze-out via susceptibilities from Lattice QCD and the Hadron Resonance Gas model contribute to the characterization of the transition region of the QCD phase diagram.

NPA Seminar: Dennis Perepelitsa, University of Colorado Boulder, “The Long Range Plan for Nuclear Science: A Perspective on Hot QCD Priorities”

Abstract: The U.S. nuclear physics community is at the beginning of its Long Range Plan for Nuclear Science process, taking place every 6-8 years. The goal of the planning process is to identify the priorities for the field going forward, including its scientific direction and investments in major detectors or facilities.

WIDG Seminar: Samantha Pagan, Yale, “A Search for Solar Axions with CUORE”

Abstract: The Cryogenic Underground Observatory for Rare Events (CUORE) is an experiment searching for neutrinoless double-beta in Te-130. An observation of this ultra-rare decay would determine that neutrinos are Majorana particles. As an extremely low background experiment with high energy resolution and exposure, CUORE is sensitive to other rare-event searches such as for solar axions and Axion Like Particles (ALPs). Axions are a well-motivated dark matter candidate that could also provide a solution for the QCD Strong CP problem.

NPA Seminar: Shirley Li, UC Irvine/Fermilab, “Neutrino-Nucleus Scattering in Neutrino Oscillation Experiments”

: The Deep Underground Neutrino Experiment (DUNE) will be the leading next-generation particle project in the US. It aims to measure CP violation in the neutrino sector and determine the mass ordering of neutrinos. These measurements are straightforward conceptually but challenging practically. One outstanding issue is the modeling of GeV neutrino-nucleus interaction. With a lack of a proper theoretical framework, it is not only difficult to simulate neutrino events in the detector accurately but also difficult to assess its impact on the physics measurements.

NPA Seminar: Paolo Parotto, Penn State, “Finite density equation of state from lattice QCD: recent results from an alternative expansion”

Exploring the Quantum Chromodynamics (QCD) phase diagram has been the goal of extraordinary research efforts from theory and experiment alike. Knowledge of the QCD equation of state at finite temperature and density is crucial to support simulations of heavy-ion collisions. Although lattice simulations are the main tool of investigation for QCD thermodynamics, the determination of the equation of state of QCD at finite chemical potential from direct simulations is hindered by the fermion sign problem.

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