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Strangeness production in heavy ion collisions at SPS and RHIC within two-source statistical model

Zhong-Dao Lu·Amand Faessler·C. Fuchs·E. Zabrodin
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Abstract

The experimental data on hadron yields and ratios in central Pb+Pb and Au+Au collisions at SPS and RHIC energies, respectively, are analysed within a two-source statistical model of an ideal hadron gas. These two sources represent the expanding system of colliding heavy ions, where the hot central fireball is embedded in a larger but cooler fireball. The volume of the central source increases with rising bombarding energy. Results of the two-source model fit to RHIC experimental data at midrapidity coincide with the results of the one-source thermal model fit, indicating the formation of an extended fireball, which is three times larger than the corresponding core at SPS.

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Zhong-Dao Lu, Amand Faessler, C. Fuchs, E. Zabrodin. 2002-06-19. Strangeness production in heavy ion collisions at SPS and RHIC within two-source statistical model. https://doi.org/10.1088/0954-3899%2F28%2F7%2F383

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