12-18 August 2012
US/Eastern timezone

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Yet stronger enhancement of Xi production at SIS

16 Aug 2012, 16:00
Regency 1/3 and Ambassador

Regency 1/3 and Ambassador

Poster Hadron thermodynamics and chemistry Poster Session Reception


Boris Tomasik (Univerzita Mateja Bela (SK))


We calculate the expectation of Xi yields in nuclear collisions at SIS energies for the case that the produces strangeness is distributed statistically over S<0 species. By taking into account that cascades are produced only in events where two kaons are produced we obtain theoretical value which is about 1/2 of that reported in previous calculations. Even possible modifications of hadron properties in baryon-rich medium do not reconcile model calculations with the data. We point out the necessity of a non-equilibrium production process in order to interpret the measured values. We note that the developed statistical model is applicable also to other species with strangeness or charm bigger than 1.

Primary author

Boris Tomasik (Univerzita Mateja Bela (SK))


Dr Evgeni Kolomeitsev (Univerzita Mateja Bela)

Presentation Materials