Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-09-17
Phys.Rev.D80:091701,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
about 9 pages, comments welcome!
Scientific paper
10.1103/PhysRevD.80.091701
We point out that mirror dark matter predicts low energy ($E_R \stackrel{<}{\sim} 2$ keV) electron recoils from mirror electron scattering as well as nuclear recoils from mirror ion scattering. The former effect is examined and applied to the recently released low energy electron recoil data from the CDMS collaboration. We speculate that the sharp rise in electron recoils seen in CDMS below 2 keV might be due to mirror electron scattering and show that the parameters suggested by the data are roughly consistent with the mirror dark matter explanation of the annual modulation signal observed in the DAMA/Libra and DAMA/NaI experiments. Thus, the CDMS data offer tentative evidence supporting the mirror dark matter explanation of the DAMA experiments, which can be more rigorously checked by future low energy electron recoil measurements.
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