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

Abstract

We propose a model of suppression of large $p_T$-pions in heavy ion collisions based on the interaction of the large $p_T$ pion with the dense medium created in the collision. The model is practically the same as the one previously introduced to describe $J/\psi$ suppression. Both the $p_T$ and the centrality dependence of the data are reproduced. In deuteron-gold collisions, the effect of the final state interaction with the dense medium turns out to be negligibly small. Here the main features of the data are also reproduced both at mid and at forward rapidities.

arXiv comment20 pages, latex, 3 postscript figures. Last version, to be published in EJPC

References in corpus (15)

• Computing Quark and Gluon Distribution Functions for Very Large Nuclei
• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Energy loss in perturbative QCD
• Suppressed pi^0 Production at Large Transverse Momentum in Central Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Absence of Suppression in Particle Production at Large Transverse Momentum in sqrt(s_NN) = 200 GeV d+Au Collisions
• Mid-Rapidity Neutral Pion Production in Proton-Proto Collisions at sqrt(s_NN) = 200 GeV
• A Quantitative Analysis of Charmonium Suppression in Nuclear Collisions
• Why the observed jet quenching at RHIC is due to parton energy loss
• Medium Modification of Jet Shapes and Jet Multiplicities
• Suppression of high transverse momentum hadrons at RHIC by (pre-) hadronic final state interactions
• A quantitative reanalysis of charmonium suppression in nuclear collisions
• Nuclear Structure Functions at Small x from Inelastic Shadowing and Diffraction
• Centrality Dependence of Hadron Multiplicities in Nuclear Collisions in the Dual Parton Model
• Strangeness enhancement in heavy ion collisions
• Cronin effect and geometrical shadowing in d+Au collisions: pQCD vs. CGC

Cited by in corpus (7)

• Heavy-Quark Kinetics in the QGP at LHC
• Thermal Dileptons at LHC
• Heavy Ion Collisions at the LHC - Last Call for Predictions
• Nuclear shadowing
• Charmonium dissociation and recombination at RHIC and LHC
• Cronin Effect and High Transver Momentum Suppression in D+Au Collisions
• Elliptic Flow and Fixed p_T Suppression in a Final State Interaction Model