2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/195080We review some recent experimental and theoretical work on the correlation among hadrons produced at intermediate $p_T$ at RHIC. The topics include: forward and backward asymmetry with and without trigger at mid-rapidity, associated-particle distribution on the near side, the $Ω$ puzzle and its solution, associated particles on the away side, and two-jet recombination at LHC.Talk given at the 11th Workshop on Correlation and Fluctuation in Multiparticle Production, Hangzhou, China, Nov 21-24, 2007Nuclear Theorytext