The existence of Dark Matter (DM) in the form of Strongly Interacting Massive
Particles (SIMPs) may be motivated by astrophysical observations that challenge
the classical Cold DM scenario. Other observations greatly constrain, but do
not completely exclude, the SIMP alternative. The signature of SIMPs at the LHC
may consist of neutral, hadron-like, trackless jets produced in pairs. We show
that the absence of charged content can provide a very efficient tool to
suppress dijet backgrounds at the LHC, thus enhancing the sensitivity to a
potential SIMP signal. We illustrate this using a simplified SIMP model and
present a detailed feasibility study based on simulations, including a
dedicated detector response parametrization. We evaluate the expected
sensitivity to various signal scenarios and tentatively consider the exclusion
limits on the SIMP elastic cross section with nucleons.Comment: 18 pages, 7 figure