We study the correlation characteristics between particles in jets produced in heavy-ion collisions. In the framework of parton recombination we calculate the η and φ distributions of a pion associated with a trigger particle. The origin of the pedestal in Δη is related to the longitudinal expansion of the thermal partons that are enhanced by the energy loss of hard partons traversing the bulk medium. The peaks in Δη and Δφ are related to the same angular spread of the shower partons in a jet cone. No artificial short- or long-range correlations are put in by hand. A large part of the correlation between hadrons in jets is due to the correlation among the shower partons arising from momentum conservation. Recombination between thermal and shower partons dominates the correlation characterisitics in the intermediate-pT region.
No takes yet. Share an insight, caveat, or question.
Chiu et al. (2005) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: