I. Böttcher

Evidence for a Soft Nuclear Equation-of-State from Kaon Production in Heavy Ion Collisions

The production of pions and kaons has been measured in 197Au+197Au collisions at beam energies from 0.6 to 1.5A GeV with the kaon spectrometer at SIS/GSI. The K+ meson multiplicity per nucleon is enhanced in Au+Au collisions by factors up to 6 relative to C+C reactions, whereas the corresponding pion ratio is reduced. The ratio of the K+ meson excitation functions for Au+Au and C+C collisions increases with decreasing beam energy. This behavior is expected for a soft nuclear equation-of-state.

MEDIUM EFFECTS IN KAON AND ANTIKAON PRODUCTION IN NUCLEAR COLLISIONS AT SUBTHRESHOLD BEAM ENERGIES

Production cross sections of

First evidence for different freeze-out conditions for kaons and antikaons observed in heavy-ion collisions.

{K}^{+}

Observation of different azimuthal emission patterns of K+and of K- mesons in heavy-ion collisions at 1-2A GeV

and

Production of charged pions, kaons and antikaons in relativistic C + C and C + Au collisions

{K}^{\ensuremath{-}}

Kaon and antikaon production in dense nuclear matter

mesons have been measured in

K+- and K−-production in heavy-ion collisions at SIS energies

\mathrm{C}+\mathrm{C}

Review of the results of the KaoS Collaboration

collisions at beam energies per nucleon below and near the nucleon-nucleon threshold. At a given beam energy, the spectral slopes of the

Kaons in dense matter: results from KaoS

{K}^{\ensuremath{-}}

First measurement of antikaon phase-space distributions in nucleus–nucleus collisions at subthreshold beam energies

mesons are significantly steeper than the ones of the