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

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

2002-06-19

arxiv.org/abs/hep-ph/0206173v1

J.Phys.G28:2127,2002; J.Phys.G28:2127-2132,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk at "Strange Quarks in Matter" Conference (Strangeness'2001), September 2001, Frankfurt a.M., Germany

Scientific paper

10.1088/0954-3899/28/7/383

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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