GW231123 most likely formed through hierarchical mergers of black holes in metal-poor globular clusters, with isolated binary channels failing to match the observed merger redshift and masses.
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Investigating the formation channel of GW231123: Population III stars or hierarchical mergers?
GW231123 most likely formed through hierarchical mergers of black holes in metal-poor globular clusters, with isolated binary channels failing to match the observed merger redshift and masses.