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

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

1995-01-05

arxiv.org/abs/nucl-th/9501002v1

Phys.Rev.C51:3343-3356,1995

Physics

Nuclear Physics

Nuclear Theory

40 pages, 18 eps-figures, uses psfig.sty; complete postscript file available at ftp://th.physik.uni-frankfurt.de/pub/bass/GSI-

Scientific paper

10.1103/PhysRevC.51.3343

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 $\Delta$ 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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