Strangelet production in heavy-ion collisions proceeds mainly through coalescence of baryons.
2 events · 1 assessment
Assessed Supported
verdict confidence 0.75 · credence 0.70
Because no strangelet has ever been detected, this claim concerns which mechanism would dominate any strangelet production in heavy-ion collisions, and the modern literature treats coalescence of baryons, hyperons and nucleons produced close together in phase space fusing into a multi-baryon object, as the dominant pathway. The reading is anchored empirically: the yields of light nuclei and antinuclei, the multi-baryon composites collisions actually produce, match coalescence predictions, and both the 2003 CERN safety study and the 2008 LHC Safety Assessment Group review base their strangelet production estimates on coalescence, treating statistical thermal production as a qualitatively similar variant. The historical rival is strangeness distillation, in which a baryon-rich quark-gluon plasma cools by emitting kaons and concentrates strangeness into a surviving droplet. Where operational it would predict larger yields than coalescence, but it requires a long-lived, baryon-rich plasma hadronizing through a first-order transition. That scenario is widely regarded as unavailable at collider energies, since the quark-hadron transition at low baryon density is a smooth crossover and the fireballs observed at RHIC are short-lived and nearly baryon-free; moreover no strangelet has been observed in any heavy-ion search, including at the AGS and SPS energies where efficient distillation predicted observable rates. A residual qualification remains: at high baryon density a first-order transition is not excluded, so distillation could in principle dominate in baryon-rich collisions at lower energies, and the question is untestable directly unless strangelets are produced at all, which presupposes the contested premise that stable or metastable strangelets can exist.
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