Rapidity dependence of azimuthal correlations for p+p and d+Au at $\sqrt{s}=200$GeV

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 ${\pi }^0-{\pi }^0$ and ${\pi }^0-h$ azimuthal correlations and forward+forward rapidity ${\pi }^0-{\pi }^0$ azimuthal correlations. Both analyses use the Forward Meson Spectrometer (FMS) triggered data in RHIC 2008 run p+p and d+Au collisions at $\sqrt{s_{NN}}$=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 ${\pi }^0-{\pi }^0$ and ${\pi }^0$ + jet-like azimuthal correlations with both the FMS and the EEMC will be discussed.

6 pages, 5 figures, Talk presented at the 27th Winter Workshop on Nuclear Dynamics, Winter Park, Colorado, USA, February 6-13, 2011. To be published in Journal of Physics: Conference Series (JPCS). The author may be contacted via: [email protected]

References in corpus (2)

• Forward Neutral Pion Production in p+p and d+Au Collisions at sqrt(s_NN)=200 GeV
• Two Particle Correlations at Forward Rapidity in STAR

Cited by in corpus (2)

• On the Dihadron Angular Correlations in Forward $pA$ collisions
• Forward azimuthal correlations in 200 GeV p+p and d+Au collisions at STAR