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PRODID:UW-Madison-Physics-Events
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SEQUENCE:3
UID:UW-Physics-Event-9149
DTSTART:20250331T203000Z
DTEND:20250331T230000Z
DTSTAMP:20260413T165717Z
LAST-MODIFIED:20250328T202858Z
LOCATION:5280 Chamberlin
SUMMARY:Astrophysical Neutrinos Uncover Neutrino Properties and Decode
  New Physics\, NPAC (Nuclear/Particle/Astro/Cosmo) Forum\, Anna Suliga
  \, New York University
DESCRIPTION:Even with only Standard Model interactions\, neutrinos pla
 y a critical role in core-collapse supernovae\, cooling the proto-neut
 ron star\, setting the conditions for nucleosynthesis\, and likely pow
 ering the explosion. Their effects could be immensely more profound in
  the presence of new physics\, often poorly constrained by laboratory 
 experiments alone. In this talk\, I will discuss the effects of the st
 rong lepton number violating neutrino self-interactions (LNV νSI) on 
 the infall phase of the core-collapse supernova evolution. Strong LNV 
 νSI processes equilibrate all neutrino seas\; hence\, all neutrino sp
 ecies share a common temperature and chemical potential. The new lower
 ed electron neutrino chemical potential renders increased electron cap
 tures. I will show how strong LNV vSI could alter the standard superno
 va collapse scenario. Unlike many existing studies focusing on the lat
 e evolution effects\, this study simulated the impact of LNV vSI on th
 e infall phase with a full analytic treatment. The rapid neutrino-anti
 neutrino equilibration leads to entropy generation and enhanced electr
 on capture that may impact star evolution and the emitted neutrino sig
 nal. Timely DUNE neutrino detectors can also independently probe this 
 new physics.
URL:https://www.physics.wisc.edu/events/?id=9149
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