Analysis of kaon spectra at SIS energies - what remains from the KN potential

Abstract

We study the reaction Au+Au at 1.48 AGeV and analyze the influence of the KN optical potential on cm spectra and azimuthal distributions at mid-rapidity. We find a significant change of the yields but only slight changes in the shapes of the distributions when turning off the optical potential. However, the spectra show contributions from different reaction times, where early kaons contribute stronger to higher momenta and late kaons to lower momenta. Azimuthal distributions of the kaons at mid-rapidity show a strong centrality dependence. Their shape is influenced by the KN optical potential as well as by re-scattering.

SQM 2003 proceedings, 4 figures, 6 pages

References in corpus (3)

• What determines the $K^{-}$ multiplicity at energies around 1-2 AGeV?
• The nuclear equation of state probed by $K^{+}$ production in heavy ion collisions
• Results from FOPI on strangeness production and propagation at SIS energies

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• Analysis of Dilepton Invariant Mass Spectrum in C+C at 2 and 1 AGeV
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• Kaon production at subthreshold energies - what do we learn about the nuclear medium ?