Direct detection experiments explained with mirror dark matter

TL;DR

This paper updates the mirror dark matter model to explain recent low-energy excesses in direct detection experiments, suggesting that halo interactions of mirror iron can account for multiple experimental results.

Contribution

It demonstrates that the mirror dark matter model can simultaneously explain data from DAMA, CoGeNT, CRESST-II, and CDMS/Si experiments with specific halo parameters.

Findings

Mirror dark matter can explain multiple experimental signals.

Halo velocity around 200 km/s fits the data.

Upcoming experiments will test this model further.

Abstract

Recently, the CDMS/Si experiment has observed a low energy excess of events in their dark matter search. In light of this new result we update the mirror dark matter explanation of the direction detection experiments. We find that the DAMA, CoGeNT, CRESST-II and CDMS/Si data can be simultaneously explained by halo $\sim Fe'$ interactions provided that $v_{rot} \approx 200$ km/s. Other parameter space is also possible. Forthcoming experiments, including CDMSlite, CDEX, COUPP, LUX, C-4,... should be able to further scrutinize mirror dark matter and closely related hidden sector models in the near future.