Normalized total cross section as a function of the dark matter mass. For a better visualization of the transition from the contact to the long range regime, we have fixed three values of the dark photon mass; namely, GeV (a), MeV (b), and (c). In all plots we show the regions where the absence of annual modulation can be rejected at 7σ CL (outer region) and 8σ CL (inner region) for DAMA (solid green contours) and 1σ CL for CoGeNT (solid green contours). For CRESST-II (solid green contours) the absence of an excess is instead excluded at 3σ CL (outer region) and 4σ CL (inner region). Constraints, derived at 5σ CL, are shown as dashed gray lines for CDMS-Ge and magenta lines for XENON100. These results have been presented in [24, 25].
