Measurement of ${\pi }^0$ and $\gamma$ in d+Au collisions at $\sqrt{s_{NN}}=$ 200 GeV by PHENIX experiment

Abstract

Previous results indicated that high $p_T$ particle suppression in Au+Au interactions is a final state effect, since R${}_{dA}$ ratios were compatible with unity, albeit within large experimental errors. It is important to test this conclusion to higher precision since the modification of structure functions may be involved. Recent d+Au data taken in 2008 improve the integrated luminosity by about a factor of thirty compared to the 2003 data. A more precise measurement of both ${\pi }^0$ and $\gamma$ at higher $p_T$ will shed new light on whether the initial state in the heavy nuclei is modified.

2 pages, 1 figure, Quark Matter 2009 conference proceedings (cosmetic changes following suggestions of reviewers)

References in corpus (4)

• Centrality Dependence of pi^0 and eta Production at Large Transverse Momentum in sqrt(s_NN) = 200 GeV d+Au Collisions
• Direct Photon Production in p+p and d+Au Collisions Measured with the PHENIX Experiment
• Characteristics of Parton Energy Loss Studied with High-p_T Particle Spectra from PHENIX
• Cold Nuclear Modifications at RHIC and LHC