The nuclear equation of state probed by $K^{+}$ production in heavy ion collisions

Abstract

The dependence of $K^{+}$ production on the nuclear equation of state is investigated in heavy ion collisions. An increase of the excitation function of $K^{+}$ multiplicities obtained in heavy ($Au+Au$) over light ($C+C$) systems when going far below threshold which has been observed by the KaoS Collaboration strongly favours a soft equation of state. This observation holds despite of the influence of an in-medium kaon potential predicted by effective chiral models which is necessary to reproduce the experimental $K^{+}$ yields. Phase space effects are discussed with respect to the $K^{+}$ excitation function.

arXiv comment14 pages Revtex, 6 figures, Proceedings to the XXXIX Interantional Winter Meeting on Nuclear Physics, Bormio, Italy, 2001

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Cited by in corpus (10)

• Kaon production in heavy ion reactions at intermediate energies
• Constraining Neutron-Star Matter with Microscopic and Macroscopic Collisions
• Strangeness Production close to Threshold in Proton-Nucleus and Heavy-Ion Collisions
• Dense Nuclear Matter Equation of State from Heavy-Ion Collisions
• Constraining the nuclear matter equation of state around twice saturation density
• Probing the density dependence of the symmetry potential in intermediate energy heavy ion collisions
• Studies of the equation-of-state of nuclear matter by heavy-ion collisions at intermediate energy in the multi-messenger era
• Kaon production at subthreshold energies - what do we learn about the nuclear medium ?
• Strangeness in strongly interacting matter
• Analysis of kaon spectra at SIS energies - what remains from the KN potential