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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-9530
DTSTART:20261106T213000Z
DTEND:20261106T223000Z
DTSTAMP:20261104T071937Z
LAST-MODIFIED:20261022T153659Z
LOCATION:Chamberlin 2241 - https://uwmadison.zoom.us/j/96927300636?pwd
 =2Gjt5BXqG7T3FfvBQ8C5okcNldSzzn.1
SUMMARY:Searching for new particles in dense astrophysical media\, Phy
 sics Department Colloquium\, Katelin Schutz\, McGill University
DESCRIPTION:I will discuss how we can treat various astrophysical syst
 ems\, like stars and compact objects\, as particle physics experiments
  that exist “for free” in Nature. Their relatively high densities\
 , large volumes\, and long timescales allow for even very rare microsc
 opic processes to have large cumulative effects. In some cases\, their
  observed properties can encode particle physics constraints that are 
 many orders of magnitude stronger than what can be achieved in a colli
 der experiment. Moreover\, unlike the pristine conditions in a laborat
 ory experiment\, particles in astrophysical settings must propagate th
 rough dense\, thermal\, magnetized environments. In-medium decays and 
 resonances can vastly enhance the production of new particles in ways 
 that have no vacuum analog. While capturing all of these effects poses
  a theoretical challenge\, it opens new opportunities to use existing 
 observations to explore even more particle physics parameter space.
URL:https://www.physics.wisc.edu/events/?id=9530
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