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Events on Thursday, April 22nd, 2021

Cosmology Journal Club
Time: 12:00 pm
Place:
Abstract: Each week, we start with a couple scheduled 15 minute talks about one's research, or an arXiv paper. The last 30 minutes will typically be open to the group for anyone to discuss an arXiv paper.

All are welcome and all fields of cosmology are appropriate.

Contact Ross Cawthon, cawthon@wisc, for more information.

Zoom info
Meeting ID: 93592708053, passcode: cmbadger

Or click:
https://uwmadison.zoom.us/j/93592708053?pwd=VWVNMDJXV2N1blV0emg4ZUg3ZGRiUT09
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High Energy Seminar
Searches for New Physics with Long Lived Particles
Time: 2:00 pm
Place: https://cern.zoom.us/j/66108950963?pwd=ZmdMRkZBbStpSmQvWDBRTjF1dTZpUT09
Speaker: Lesya Horyn, Fermi Lab
Abstract: With the lack of evidence for new physics from the LHC’s Run 2 dataset so far, it is essential that we leave no corner of phase space unexplored. In this talk, I will discuss a recent result from the ATLAS Experiment looking for leptons with large impact parameters. This result provides unique sensitivity to sleptons with lifetimes between 0.001 and 10 ns in Gauge-Mediated Supersymmetry Models for the first time at the LHC, improving upon previous limits by almost an order of magnitude. I will also discuss trigger limitations in searches for long lived particles, and how the planned upgrades to the LHC detectors might be able to improve the situation.

ZOOM Only: https://cern.zoom.us/j/66108950963?pwd=ZmdMRkZBbStpSmQvWDBRTjF1dTZpUT09
Host: Kevin Black
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NPAC (Nuclear/Particle/Astro/Cosmo) Forum
Searches for New Physics with Long Lived Particles
Time: 2:00 pm
Place: Zoom: https://cern.zoom.us/j/66108950963?pwd=ZmdMRkZBbStpSmQvWDBRTjF1dTZpUT09
Speaker: Lesya Horyn, Fermilab
Abstract: With the lack of evidence for new physics from the LHC’s Run 2 dataset so far, it is essential that we leave no corner of phase space unexplored. In this talk, I will discuss a recent result from the ATLAS Experiment looking for leptons with large impact parameters. This result provides unique sensitivity to sleptons with lifetimes between 0.001 and 10 ns in Gauge-Mediated Supersymmetry Models for the first time at the LHC, improving upon previous limits by almost an order of magnitude. I will also discuss trigger limitations in searches for long lived particles, and how the planned upgrades to the LHC detectors might be able to improve the situation.
Host: Kevin Black
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Astronomy Colloquium
"Simulating Galaxy Formation"
Time: 3:30 pm
Place: Zoom meeting(see Abstract ) Coffee and tea 3:30pm, Talk 3:45pm
Speaker: Mark Vogelsberger, MIT
Abstract: Cosmological simulations of galaxy formation have evolved significantly over the last years. In my talk I will describe recent efforts to model the large-scale distribution of galaxies with cosmological hydrodynamics simulations. I will focus on large-scale simulations like IllustrisTNG. After demonstrating the success of these simulations in terms of reproducing an enormous amount of observational data, I will also talk about their limitations and directions for further improvements over the next couple of years.

Zoom Link:
https://uwmadison.zoom.us/j/88513896776?pwd=Y1JtRE1KZllxWkFTamJBSGtGdm9yQT09
Host: Elena D'onghia
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