Abstract: Gamma-Hadron Correlations in STAR

We present the STAR results for the gamma-jet measurement in 200 GeV Au+Au collision from Run-7 using a level2 high-p$_T$ photon trigger. The same measurements from p+p collisions at the same energy from Run-6 are performed as a baseline for studies of medium effects. The transverse shower shape analysis in the STAR Barrel Electromagnetic Calorimeter is used to discriminate between the direct photons and photons from neutral pion decays at high p$_T$. A comparison between the direct $gamma-$jet correlations and $pi0-$jet correlations is also shown. We discuss how these measurements constrain the energy loss mechanism and its dependence on the initial parton energy.