Forward Pion Production in Hadron Collisions at STAR
Abstract
Measurements are reported of the production of high energy pi^0 mesons at large pseudorapidity, coincident with charged hadrons at mid-rapidity, for proton+proton and deuteron+gold collisions at sqrt{s_{NN}}=200 GeV. The p+p cross section for inclusive pi^0 production follows expectations from next-to-leading order perturbative QCD. A suppression of the back-to-back azimuthal correlations was observed in d+Au, qualitatively consistent with the gluon saturation picture. Experimental uncertainties regarding the inclusive measurement are discussed.
- Publication:
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arXiv e-prints
- Pub Date:
- January 2005
- DOI:
- arXiv:
- arXiv:nucl-ex/0501026
- Bibcode:
- 2005nucl.ex...1026R
- Keywords:
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- Nuclear Experiment
- E-Print:
- 5 pages, 4 eps figures. Uses espcrc2.sty. Submitted talk presented at the International Workshop on Diffraction in High-Energy Physics (DIFFRACTION 2004) at Cala Gonone, Sardinia, Italy 18-23 September 2004. To be published in proceedings. Ver. 2: reference added, inner error bar displayed on Fig. 1