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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
; | | Date: |
19 Jun 2002 | | Journal: | J.Phys. G28 (2002) 2127 | | Subject: | hep-ph nucl-ex nucl-th | | Affiliation: | 1,2), Amand Faessler , C. Fuchs , E. Zabrodin (2,3) ( China Institute of Atomic Energy, Beijing, China; Institut fuer Theoretische Physik, Universitaet Tuebingen, Germany; Institute for Nuclear Physics, Moscow State University, Russia | | 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. | | Source: | arXiv, hep-ph/0206173 | | Services: | Forum | Review | PDF | Favorites | |
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