Anomalous suppression of $π^0$ production at large transverse momentum in Au + Au and d + Au collisions at $\sqrt{{\bf s}_{\bf NN}} =$ 200 GeV

Details Anomalous suppression of $π^0$ production at large transverse momentum in Au + Au and d + Au collisions at $\sqrt{{\bf s}_{\bf NN}} =$ 200 GeV Anomalous suppression of $π^0$ production at large transverse momentum in Au + Au and d + Au collisions at $\sqrt{{\bf s}_{\bf NN}} =$ 200 GeV

2004-03-08

arxiv.org/abs/hep-ph/0403081v3

Eur.Phys.J. C40 (2005) 129-135

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1140/epjc/s2004-02097-6

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.

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