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SEQUENCE:0
UID:UW-Physics-Event-8502
DTSTART:20231114T200000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T045102Z
LAST-MODIFIED:20231109T200936Z
LOCATION:Join Zoom Meeting https://berkeley.zoom.us/j/91230714547  Mee
 ting ID: 912 3071 4547
SUMMARY:Free-Streaming Neutrinos in the Early Universe \, Network in N
 eutrinos\, Nuclear Astrophysics\, and Symmetries (N3AS) Seminar\, Benj
 amin Wallisch \, Stockholm University & UT Austin
DESCRIPTION:Standard Model neutrinos decoupled from the primordial pla
 sma about one second after the big bang and have been free-streaming t
 hrough the cosmos ever since. This leaves a subtle imprint in the bary
 on acoustic oscillations as observed in the cosmic microwave backgroun
 d (CMB) and large-scale structure (LSS) of the universe. Through caref
 ul theoretical considerations of the underlying physics and observable
 s\, we have been able to extract and measure the neutrino-induced phas
 e shift in current CMB and LSS observations. In this talk\, I will pre
 sent 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.<br>\n<br>\nNOTE: All participa
 nts and hosts are now required to sign into a Zoom account prior to jo
 ining meetings hosted by UC Berkeley.
URL:https://www.physics.wisc.edu/events/?id=8502
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