Dark matter and dark radiation

  title={Dark matter and dark radiation},
  author={L. Ackerman and Matthew R. Buckley and S. Carroll and M. Kamionkowski},
  journal={Physical Review D},
  • L. Ackerman, Matthew R. Buckley, +1 author M. Kamionkowski
  • Published 2009
  • Physics
  • Physical Review D
  • We explore the feasibility and astrophysical consequences of a new long-range U(1) gauge field ("dark electromagnetism") that couples only to dark matter, not to the Standard Model. The dark matter consists of an equal number of positive and negative charges under the new force, but annihilations are suppressed if the dark matter mass is sufficiently high and the dark fine-structure constant α is sufficiently small. The correct relic abundance can be obtained if the dark matter also couples to… CONTINUE READING
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