A stopped Delta-Matter Source in Heavy Ion Collisions at 10 GeV/n
Markus Hofmann, Raffaele Mattiello, Heinz Sorge, Horst Stoecker, Walter Greiner
Abstract
We predict the formation of highly dense baryon-rich resonance matter in Au+Au collisions at AGS energies. The final pion yields show observable signs for resonance matter. The Delta(1232) resonance is predicted to be the dominant source for pions of small transverse momenta. Rescattering effects -- consecutive excitation and deexcitation of Deltas -- lead to a long apparent lifetime (> 10 fm/c) and rather large volumina (several 100 fm3) of the Delta-matter state. Heavier baryon resonances prove to be crucial for reaction dynamics and particle production at AGS.
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