Events

Theory Seminar (High Energy/Cosmology)

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Events During the Week of October 11th through October 18th, 2015

Monday, October 12th, 2015

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Tuesday, October 13th, 2015

Cosmological Probes of Nearly Decoupled Dark Sectors
Time: 3:30 pm - 4:30 pm
Place: 5280 Chamberlin Hall
Speaker: Josh Berger, University of Wisconsin-Madison
Abstract: Many models of cold dark matter generate the observed relic abundance by employing dark photons and/or dark Higgs bosons as mediators. In this work, we place constraints on the mediator parameter space by considering nucleosynthesis and CMB spectral distortion constraints. We focus on the limit when the mediators have very weak mixing with the Standard Model. Before their decay, mediator abundance is frozen-in. We find dramatic improvement on the spectral distortion constraints can be generated from a proposed experiment such as PIXIE.
Host: Amol Upadhye
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Wednesday, October 14th, 2015

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Thursday, October 15th, 2015

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Friday, October 16th, 2015

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