PIRSA:18040161 Scientific Series Particle Physics

DOI10.48660/18040161

Series: Particle Physics

Pappadopulo, D. (2018). Coscattering: a fourth exception in the calculation of relic abundances. Perimeter Institute. https://pirsa.org/18040161

Pappadopulo, Duccio. Coscattering: a fourth exception in the calculation of relic abundances. Perimeter Institute, Apr. 27, 2018, https://pirsa.org/18040161 

@misc{ pirsa_PIRSA:18040161,
  doi = {10.48660/18040161},
  url = {https://pirsa.org/18040161},
  author = {Pappadopulo, Duccio},
  keywords = {Particle Physics},
  language = {en},
  title = {Coscattering: a fourth exception in the calculation of relic abundances},
  publisher = {Perimeter Institute},
  year = {2018},
  month = {apr},
  note = {PIRSA:18040161 see, \url{https://pirsa.org}}
}

Abstract

I show that dark matter abundance can be set by the decoupling of inelastic scatterings instead of annihilations. Coscattering points to dark matter that is exponentially lighter than the weak scale and has a suppressed annihilation rate, avoiding constraints from indirect detection. The late decays of the states into which dark matter upscatters, can lead to observable distortions to the blackbody spectrum of the cosmic microwave background. 

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