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UID:UW-Physics-Event-3830
DTSTART:20151013T203000Z
DTEND:20151013T213000Z
DTSTAMP:20260419T110545Z
LAST-MODIFIED:20151012T205231Z
LOCATION:5280 Chamberlin Hall
SUMMARY:Cosmological Probes of Nearly Decoupled Dark Sectors\, Theory 
 Seminar (High Energy/Cosmology)\, Josh Berger\, University of Wisconsi
 n-Madison
DESCRIPTION:Many models of cold dark matter generate the observed reli
 c abundance by employing dark photons and/or dark Higgs bosons as medi
 ators. In this work\, we place constraints on the mediator parameter s
 pace by considering nucleosynthesis and CMB spectral distortion constr
 aints. We focus on the limit when the mediators have very weak mixing 
 with the Standard Model. Before their decay\, mediator abundance is fr
 ozen-in. We find dramatic improvement on the spectral distortion const
 raints can be generated from a proposed experiment such as PIXIE. 
URL:https://www.physics.wisc.edu/events/?id=3830
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