R. Bernabei et al., Extended limits on neutral strongly interacting massive particles and nuclearites from NaI(Tl) scintillators, PHYS REV L, 83(24), 1999, pp. 4918-4921
Neutral strongly interacting massive particles (SIMPs) were searched for at
the Gran Sasso National Laboratory by using two "planes" of detectors in t
he similar or equal to 100 kg highly radiopure NaI(T1) DAMA setup. SIMP exc
lusion plots and model-independent limits on neutral nuclearites have been
significantly improved.