Probing High Parton Densities at Low-$x$ in d+Au Collisions at PHENIX Using the New Forward and Backward Muon Piston Calorimeters

Abstract

The new forward Muon Piston Calorimeters allow PHENIX to explore low-$x$ parton distributions in d+Au collisions with hopes of observing gluon saturation. We present a two-particle azimuthal $\Delta \varphi$ correlation measurement made between a mid-rapidity particle ($|{\eta }_1|<0.35$) and a forward ${\pi }^0$ ($3.1<{\eta }_2<3.9$) wherein we compare correlation widths in d+Au to p+p and compute $I_{dA}$.

4 pages, 3 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee

References in corpus (8)

• Evolution of the nuclear modification factors with rapidity and centrality in d+Au collisions at $\sqrt{s_{NN}} = 200 GeV
• Forward Neutral Pion Production in p+p and d+Au Collisions at sqrt(s_NN)=200 GeV
• Coherent QCD multiple scattering in proton-nucleus collisions
• Jet Azimuthal Correlations and Parton Saturation in the Color Glass Condensate
• Nuclear Modification Factors for Hadrons At Forward and Backward Rapidities in Deuteron-Gold Collisions at sqrt(s_NN) = 200 GeV
• Jet Structure from Dihadron Correlations in d+Au collisions at sqrt(s_NN) = 200 GeV
• Azimuthal Angle Correlations for Rapidity Separated Hadron Pairs in d+Au Collisions at sqrt(s_NN) = 200 GeV
• Probing jet properties via two particle correlation method

Cited by in corpus (7)

• Universality of Unintegrated Gluon Distributions at small x
• Gluon saturation and initial conditions for relativistic heavy ion collisions
• Leading twist nuclear shadowing phenomena in hard processes with nuclei
• Multiple parton interactions and forward double pion production in pp and dA scattering
• Single and double inclusive particle production in d+Au collisions at RHIC, leading twist and beyond
• Azimuthal angle and rapidity dependence of di-hadron correlations in QCD
• Leading twist shadowing, black disk regime and forward hadron production