DAMA/NaI results on neutral SIMPs

Neutral SIMPs

In an exposure larger than 1 x 106 cm2 sr day two delayed coincidences were detected in the mainly single scattering region; 0 delayed coincidences were instead detected in the multiple scattering region. The excluded regions of SIMP mass (MS) extent up to 4 x 1016 GeV in the given model framework as shown in the figure on the right (SI=spin-independent coupling; SD=spin-dep. coupling). The regions allowed by the Starkman et al. analysis under various hypotheses are shaded