A search for strongly interacting massive particles with NaI scintillators

A new search for strongly interacting massive particles both with coherent and spin-dependent interactions with ordinary matter has been performed deep underground in the Gran Sasso Laboratory. An experimental rate for delayed coincidences between two NaI(Tl) detectors has been measured; an upper limit of 0.0011 events/hour (90% CL) has been obtained. New regions in the diagram cross-section versus SIMP mass have been excluded both for coherent and spin-dependent interactions.