Abstract
Forward di-jet production in d+Au collisions at RHIC provides sensitivity to Bjorken-x between 0.001 and 0.02 for the nuclear gluon density. The STAR experiment at RHIC has continuous azimuthal coverage with electromagnetic calorimeters for pseudo-rapidity from-1 to 4. We have measured forward+mid-rapidity π0 − π0 and π0 − h azimuthal correlations and forward+forward rapidity π0 − π0 azimuthal correlations. Both analyses use the Forward Meson Spectrometer (FMS) triggered data in RHIC 2008 run p+p and d+Au collisions at = 200 GeV. The end-cap electromagnetic calorimeter (EEMC) at STAR covers pseudo-rapidity from 1.07 to 2. This provides us sensitivity to the nuclear gluon density at intermediate x values. Preliminary results on the π0 − π0 and π0 + jet-like azimuthal correlations with both the FMS and the EEMC will be discussed.
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