APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Yu-Dai Tsai (KICP, U Chicago)
Title: New Models, Dark Matter Experiments, and Neutrino Searches at the High-Energy Intensity Frontier – Resonant SIDM, FORMOSA, LongQuest, and Forward Neutrino Campus
Date: Wed, Dec 09, 2020, 10:00 - 11:00
Place: Zoom
Abstract: In this talk, I will give a general overview of experimental facilities with both high energies and high intensities, and how they can help explore dark matter models, complementary to astrophysical and cosmological searches. I will then talk about my new experimental proposals (FORMOSA, LongQuest, & Forward-DUNE) utilizing these facilities to study dark-sector models, including millicharged particles and portals to the dark sector, and neutrino physics.

I will then discuss the possibility of constructing a TeV "Forward Neutrino Campus" at the LHC forward physics region, using Forward Proto-DUNE and FORMOSA as examples. Forward Proto-DUNE can help fill in the gap between low-energy and high-energy neutrino cross-section measurements, and FORMOSA can study tau neutrino electric dipole moment.

Finally, I will discuss a new model, Resonant Self-Interacting Dark Meson, and tie it to the accelerator searches at the high energy-intensity frontier. I will also discuss how observations on the galactic scales can help distinguish different models.

If I have time, I will mention how to use precessions of exoplanets and trans-Neptunian objects (TNOs) to study ultralight axions.
This talk is based on arXiv:2008.08608, arXiv:1908.07525, arXiv:2010.07941, arXiv:1812.03998, and ongoing works.