The Annual Modulation Signature for Dark Matter: DAMA/LIBRA-Phase1 Results and Perspectives
Figure 8
Phase as a function of the energy for the total exposure; here, the errors are at . The vertical scale spans over ± a quarter of period around 2 June; other intervals are replica of it. An annual modulation effect is present in the lower energy intervals up to 6 keV and the phase agrees with that expected for DM induced signals. No modulation is present above 6 keV and thus the phase is undetermined. See text.
