Network in Neutrinos, Nuclear Astrophysics, and Symmetries (N3AS) Seminars

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Events on Tuesday, November 14th, 2023

Free-Streaming Neutrinos in the Early Universe
Time: 2:00 pm
Place: Join Zoom Meeting Meeting ID: 912 3071 4547
Speaker: Benjamin Wallisch , Stockholm University & UT Austin
Abstract: Standard Model neutrinos decoupled from the primordial plasma about one second after the big bang and have been free-streaming through the cosmos ever since. This leaves a subtle imprint in the baryon acoustic oscillations as observed in the cosmic microwave background (CMB) and large-scale structure (LSS) of the universe. Through careful theoretical considerations of the underlying physics and observables, we have been able to extract and measure the neutrino-induced phase shift in current CMB and LSS observations. In this talk, I will present the theoretical background, new data analyses and forecasts for the free-streaming nature of neutrinos, and discuss some implications for physics beyond the Standard Model.

NOTE: All participants and hosts are now required to sign into a Zoom account prior to joining meetings hosted by UC Berkeley.
Host: Baha Balantekin
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