Early Universe cosmology in the light of the mirror dark matter interpretationof the DAMA/Libra signal

摘要

Mirror dark matter provides a simple framework for which to explain the DAMA/LIBRA annualmodulation signal consistently with the null results of the other direct detection experiments. Thesimplest possibility involves ordinary matter interacting with mirror dark matter via photon-mirrorphoton kinetic mixing of strength ∈≥～10~(-9).We confirm that photon-mirror photon mixing of thismagnitude is consistent with constraints from ordinary Big Bang nucleosynthesis as well as the morestringent constraints from cosmic microwave background measurements and large scale structureconsiderations.