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Cosmological constraints on dark matter models with velocity-dependent annihilation cross section
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Cosmological constraints on dark matter models with velocity-dependent annihilation cross section
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We derive cosmological constraints on the annihilation cross section of dark matter with velocity-dependent structure, motivated by annihilating dark matter models through Sommerfeld or Breit-Wigner enhancement mechanisms. In models with annihilation cross section increasing with decreasing dark matter velocity, big-bang nucleosynthesis and cosmic microwave background give stringent constraints.
Forward citations
Cited by 2 Pith papers
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