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Abstract: The hadronization effects induced by various color connections of the four-quark system in annihilation are briefly reviewed. A special color connection of the four-heavy-quark system with no color separation favors the production of doubly heavy baryons. For the related three-jet case, the corresponding hadronization has not yet been considered. We argue that it can be effectively described as two-string fragmentation in addition to the leading heavy diquark fragmentation. The production rate and the properties of the final-state hadron systems are discussed. Emphasis is placed on the string effect as a fingerprint of this hadronization procedure. [Copyright &y& Elsevier]

Abstract: The hadronization effects induced by different colour connections of system in annihilation are investigated by a toy model where diquark fragmentation is employed based on Pythia. It is found that the correlations between the charm baryons and charm antibaryons produced via diquark pair fragmentation are much stronger, and their momentum spectra are harder than those from the standard colour connection in Pythia. [Copyright &y& Elsevier]