Early Universe cosmology in the light of the mirror dark matter interpretation of the DAMA/Libra signal
Paolo Ciarcelluti, Robert Foot
TL;DR
This paper explores how mirror dark matter, interacting via photon-mirror photon kinetic mixing, can explain the DAMA/Libra signal without conflicting with other cosmological constraints, offering a viable dark matter model.
Contribution
It demonstrates that photon-mirror photon kinetic mixing of about 10^(-9) aligns with cosmological constraints and explains DAMA/Libra's detection signal.
Findings
Mirror dark matter explains DAMA/Libra signal
Kinetic mixing strength ~ 10^(-9) is cosmologically viable
Consistent with Big Bang nucleosynthesis and CMB constraints
Abstract
Mirror dark matter provides a simple framework for which to explain the DAMA/Libra annual modulation signal consistently with the null results of the other direct detection experiments. The simplest possibility involves ordinary matter interacting with mirror dark matter via photon-mirror photon kinetic mixing of strength epsilon ~ 10^(-9). We confirm that photon-mirror photon mixing of this magnitude is consistent with constraints from ordinary Big Bang nucleosynthesis as well as the more stringent constraints from cosmic microwave background measurements and large scale structure considerations.
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