Disentangling Dark Physics with Cosmic Microwave Background Experiments

26 Jun 2018 Zack Li Vera Gluscevic Kimberly K. Boddy Mathew S. Madhavacheril

We forecast constraints on dark matter (DM) scattering with baryons in the early Universe with upcoming and future cosmic microwave background (CMB) experiments, for DM particle masses down to 15 keV. In terms of the upper limit on the interaction cross section for a velocity-independent spin-independent elastic scattering, compared to current Planck results, we find a factor of $\sim$6 improvement with CMB-Stage 3, a factor of $\sim$26 with CMB-Stage 4, and a factor of $\sim$200 with a cosmic-variance limited experiment... (read more)

PDF Abstract