J/ψ-hadron correlations at STAR

Despite over 30 years of theoretical studies of quarkonia production, the consistent description of J/ψ production mechanism is still missing. At RHIC energies, the main difficulty is the separation of different contributions to the inclusive J/ψ yield, which are direct production, feed-down from excited charmonium states and b-hadron decays. The information about production rates for these processes is also crucial to understand J/ψ in-medium interaction which has been an active field of research for the last 20 years. In this article we discuss the recent results of J/ψ-hadron correlation reported by the STAR collaboration. This measurement was used to constrain the contribution from b-hadron decays to inclusive J/ψ yield at high transverse momentum. We also discuss prospects for using quarkonia-hadron correlation to study quarkonia direct production.