summary - Independent (not officially commissioned) theoretical assessment of RHIC strangelet-production risk, published essentially concurrently with Busza et al. 2000. Uses the same cosmic-ray-survival logic - natural heavy-ion collisions (cosmic rays striking the Moon, other planets, and stars) have already sampled collision conditions matching or exceeding RHIC’s, without observed catastrophe - to derive what the authors call a “safe and stringent upper bound” on strangelet-production risk. Focuses on constraining the strangelet-production cross-section and its energy/mass dependence rather than on RHIC-specific strangelet stability conditions.
relevance_note - A second, independent RHIC-era risk assessment reaching the same conclusion via the same cosmic-ray premise as Busza et al. - a cross-check on that paper, though it shares rather than adds to its underlying data basis.