Coalescence production of sexaquark with three diquarks in high-energy nuclear collisions

The coalescence production of the sexaquark, a hypothetical stable state with quark content ðuuddssÞ, is investigated using the parton and hadron cascade model PACIAE in pp collisions at ps ¼ 7 TeV. In this ffiffi work, the compact sexaquark bound state of three diquarks is formed in the final partonic state by a two-step approach, which involves “diquark” formation via partonic coalescence and sexaquark construction with the dynamically constrained phase-space coalescence model successively. The yields, yield ratios, and dependences of the spatial parameters (the size of the diquark D₀ and the radius of the sexaquark R₀) of a (anti)sexaquark are predicted. The yields of the hadronic H-dibaryon molecule HðΛΛÞ generated in the final hadronic state are also compared. These estimates provide references for future sexaquark searches and other exotic state studies, such as dibaryons.