Jet Measurements with Neutral and Di-jet Triggers in Central Au+Au Collisions at $\sqrt{s_{NN}}$ = 200 GeV with STAR

Abstract

We present two measurements related to jet production in p+p and central Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV. Firstly, a study of semi-inclusive charged recoil jets coincident with high-${\mathrm{p}}_{\mathrm{T}}$ direct-photon and neutral pions, and secondly, the hadron correlations with respect to reconstructed di-jet triggers. Indication of medium effects is observed by comparing $\gamma$+jet and ${\pi }^0$+jet measurements. The di-jet+hadron study shows signs that the medium-induced modifications of an imbalanced set of di-jets with "hard cores" primarily affect the recoil jet.

Comments: 4 pages, 3 Figures, proceedings for the Quark Matter 2017