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Azimuthal correlations of pions in relativistic heavy ion collisions at 1 GeV/nucl.

S. A. Bass·C. Hartnack·H. Stoecker·W. Greiner
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Abstract

Triple differential cross sections of pions in heavy ion collisions at 1 GeV/nucl. are studied with the IQMD model. After discussing general properties of $Δ$ resonance and pion production we focus on azimuthal correlations: At projectile- and target-rapidities we observe an anticorrelation in the in-plane transverse momentum between pions and protons. At c.m.-rapidity, however, we find that high $p_t$ pions are being preferentially emitted perpendicular to the event-plane. We investigate the causes of those correlations and their sensitivity on the density and momentum dependence of the real and imaginary part of the nucleon and pion optical potential.

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S. A. Bass, C. Hartnack, H. Stoecker, W. Greiner. 1995-01-05. Azimuthal correlations of pions in relativistic heavy ion collisions at 1 GeV/nucl.. https://doi.org/10.1103/physrevc.51.3343

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