Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1854050 | Progress in Particle and Nuclear Physics | 2009 | 6 Pages |
Abstract
The production of K+ and Kâ mesons below and at the NN threshold is summarized, based on a comparison of data with transport model calculations. K+ mesons are created in associate production, together with hyperons (e.g. Î) in multi-step processes involving Î resonances. These processes occur mainly during the high-density phase of the collision and this makes the K+ an ideal tool to extract the stiffness of the nuclear equation of state, found to be rather soft, with a compressibility modulus K below 240 MeV. In contrast, the major part of Kâ mesons are produced via strangeness exchange. Most of the created Kâ are absorbed and the surviving ones are emitted quite late and at low densities.
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Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
H. Oeschler,