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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:3
UID:UW-Physics-Event-7933
DTSTART:20221206T220000Z
DTEND:20221206T230000Z
DTSTAMP:20260414T071356Z
LAST-MODIFIED:20221205T161750Z
LOCATION:Chamberlin 5280
SUMMARY:Electroweak Symmetric Balls\, Theory Seminar (High Energy/Cosm
 ology)\, Mrunal Prashant Korwar\, UW Madison
DESCRIPTION:Electroweak symmetric balls are macroscopic objects with e
 lectroweak symmetry restored inside. Such an object can arise in model
 s where dark sectors contain monopole or non-topological soliton with 
 a Higgs portal interaction to the Standard Model. It could be produced
  in the early universe via phase transition or preheating mechanism\, 
 accounting for all dark matter. In a scenario where the balls are allo
 wed to evaporate\, the observed baryon asymmetry in our universe could
  be explained by a mechanism of “catalyzed baryogenesis.” In this 
 mechanism\, the motion of a ball-like catalyst provides the necessary 
 out-of-equilibrium condition\, its outer wall has CP-violating interac
 tions with the Standard Model particles\, and its interior has baryon 
 number violating interactions via electroweak Sphaleron. Because of el
 ectroweak symmetric cores\, such objects have a large geometric cross-
 section off a nucleus\, generating a multi-hit signature in large-volu
 me detectors. These objects could radiatively capture a nucleus and re
 lease GeV-scale energy for each interaction. The IceCube detector can 
 probe dark matter balls with masses up to a gram.
URL:https://www.physics.wisc.edu/events/?id=7933
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