Theory Seminar (High Energy/Cosmology) |
Events During the Week of October 11th through October 18th, 2015
Monday, October 12th, 2015
- No events scheduled
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
Wednesday, October 14th, 2015
- No events scheduled
Thursday, October 15th, 2015
- No events scheduled
Friday, October 16th, 2015
- No events scheduled