Mirror dark matter offers a framework to explain the existing dark matter direct detection experiments, including the impressive DAMA signal. Here, we examine the implications of mirror dark matter for experiments like CDMS II/Ge and XENON10 which feature higher recoil energy threshold than the DAMA NaI experiments. We show that the two events seen in the CDMS II/Ge experiment are consistent with the interactions of the anticipated heavy $\sim F{e}^{\prime }$ component. This interpretation of the CDMS II/Ge events is a natural one given that (a) mirror dark matter predicts an event rate which is sharply falling with respect to recoil energy and (b) that the two observed events are in the low energy region near threshold. Importantly, this interpretation of the CDMS II events can be checked by ongoing and future experiments, and we hereby predict that the bulk of the events will be in the $E_R\le 18\mathrm{keV}$ region.

• Received 31 December 2009

DOI:https://doi.org/10.1103/PhysRevD.81.087302