Figure 1

We show the region consistent with the DAMA/LIBRA modulation signal (at 68%, 90%, and 99% C.L.), accounting for the detailed modulation energy spectrum between 2–6 keVee and the single bin modulation between 6–14 keVee (colored contours). Around this, we show the envelope (gray line) consistent with the DAMA/LIBRA modulation signal at 99% C.L., fitting the total modulation rate from the two bins, 2–6 and 6–14 keVee (i.e., no spectral information). Also shown are bounds calculated by considering data from the CDMS-II (Si) and XENON10 experiments. The limit curve labeled “DAMA Total” arises from the self-consistency with the total (unmodulated) rates in the DAMA-LIBRA data, as described in Sec. 3. At right, we zoom in on the light mass region. When zooming in, we study variations about the minimum ${\chi }^2$ in the low mass region, as described in the text.Reuse & Permissions

Figure 2

We show the modulation spectra for the best fit point in the high mass region, $m_{\chi }=77\mathrm{GeV}$ (dot-dashed orange line), and three points in the low mass region. The best fit point off in this region is $m_{\chi }=12\mathrm{GeV}$ (solid red line). We also show $m_{\chi }=2\mathrm{GeV}$ (dashed green line) and $m_{\chi }=7\mathrm{GeV}$ (dotted blue line). The points with error bars are the DAMA/LIBRA data, taken from Fig. 9 of 1.Reuse & Permissions

Figure 3

Similar to Fig. 1, but incorporating a stream of DM, with $v_{\mathrm{str}}=900\mathrm{km}/\mathrm{s},$ and ${\sigma }_{\mathrm{str}}=20\mathrm{km}/\mathrm{s}$. Insets: magnification of parameter space near 2 and 4 GeV. The 2 GeV relies on both channeling and the stream; the 4 GeV region arises from unchanneled events from the stream.Reuse & Permissions

Figure 4

Similar to Fig. 1, but including only inelastic scatterings, with $\delta =35\mathrm{keV}$.Reuse & Permissions