Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-10-21
Eur.Phys.J.A29:119-121,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages, 4 postscript figures, uses hiph-art.sty
Scientific paper
10.1140/epja/i2005-10309-6
The present status of the thermal model is reviewed and the recently discovered sharp peak in the $K^+/\pi^+$ ratio is discussed in this framework. It is shown that the rapid change is related to a transition from a baryon dominated hadronic gas to a meson dominated one. Further experimental tests to clarify the nature of the transition are discussed. In the thermal model the corresponding maxima in the Xi/pi and Omega/pi ratios occur at slightly different beam energies.
Cleymans Jean
Oeschler Helmut
Redlich Krzysztof
Wheaton Spencer
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