Resolutions of Several Puzzles at Intermediate pT and Recent Developments in Correlation

Abstract

Some of the puzzles on hadron production at intermediate p T found at RHIC are explained as natural consequences of parton recombination. In that framework for hadronization the correlation among hadrons produced in jets can be calculated. Some new results on both near-side and away-side jet structures are presented.

High Hadron Correlation and No Correlation

“…Since most of the existing data on jet correlation are for p trig T < 6 GeV/c, and for p assoc T even lower, fragmentation is not a reliable mechanism for hadronization at those intermediate momentum ranges [1]. Most of the quantitative calculations that can reproduce the data are based on the recombination model (RM).…”