Cronin Effect and High Transver Momentum Suppression in D+Au Collisions

Abstract

Great interest has attached to recent D+Au, s^(1/2) = 200 A GeV data at RHIC, obtained with the BRAHMS detector. Between pseudorapidity eta=0 and eta=3.2 the appropriately defined ratio R[DAu/PP], comparing transverse momentum spectra of D+Au to P+P exhibits a steady decrease with eta. This diminuition is examined within a two-stage simulation, the last stage being a purely hadronic, reduced energy cascade. The result is an adequate description of the data including the so-called Cronin effect. Additionally there is clear evidence for suppression, in the second stage, of relatively high transverse momentum, eta=0, leading mesons, i.e. the Cronin effect, only near mid-rapidity, is appreciably muted by final state interactions.

13 pages, 6 figures

References in corpus (4)

• Evolution of the nuclear modification factors with rapidity and centrality in d+Au collisions at $\sqrt{s_{NN}} = 200 GeV
• Jet Azimuthal Correlations and Parton Saturation in the Color Glass Condensate
• Charmonium systems after the deconfinement transition
• Anomalous suppression of ${\pi }^0$ production at large transverse momentum in Au + Au and d + Au collisions at $\sqrt{{\mathbf{s}}_{\mathbf{NN}}}=$ 200 GeV

Cited by in corpus (4)

• Suppression of High Transverse Momentum ${\pi }^0$ Spectra in Au+Au Collisions at RHIC
• J/Psi Production by Charm Quark Coalescence
• Particle production and nonlinear diffusion in relativistic systems
• Elliptical Flow in Relativistic Ion Collisions at s^(1/2)= 200 A GeV