Constraints on Scattering of keV-TeV Dark Matter with Protons in the Early Universe.

@article{Gluscevic2017ConstraintsOS,
  title={Constraints on Scattering of keV-TeV Dark Matter with Protons in the Early Universe.},
  author={Vera Gluscevic and Kimberly K. Boddy},
  journal={Physical review letters},
  year={2017},
  volume={121 8},
  pages={
          081301
        }
}
We present the first cosmological constraint on dark matter scattering with protons in the early Universe for the entire range of dark matter masses between 1 keV and 1 TeV. This constraint is derived from the Planck measurements of the cosmic microwave background (CMB) temperature and polarization anisotropy, and the CMB lensing anisotropy. It improves upon previous CMB constraints by many orders of magnitude, where limits are available, and closes the gap in coverage for low-mass dark matter… 
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