https://doi.org/10.1140/epjc/s2003-01255-8
theoretical physics
Strange particle production at RHIC in the dual parton model
1
Laboratoire de Physique Théorique, Unité Mixte de Recherche UMR no. 8627 - CNRS, Université de Paris XI, Bâtiment 210, 91405, Orsay Cedex, France
2
Theory Division, CERN, 1211, Geneva 23, Switzerland
3
Unité Mixte de Recherche UMR no. 8627 - CNRS, ECT, Villa Tambosi, Strada delle Tabarelle 286, 38050, Villazzano, Trento, Italy
We compute the mid-rapidity densities of pions, kaons, baryons and antibaryons in Au-Au collisions at $\sqrt{s} = 130 $ GeV in the dual parton model supplemented with final state interaction (comovers interaction). The ratios $B/n_{\mathrm {{part}}}$ ($\overline{B}/n_{\mathrm {{part}}}$) increase between peripheral ($n_{\mathrm {{part}}} = 18$) and central ($n_{\mathrm {{part}}} = 350)$ collisions by a factor 2.4 (2.0) for the $\Lambda$, 4.8 (4.1) for the $\Xi$ and 16.5 (13.5) for the $\Omega$. The ratio $K^-/\pi^-$ increases by a factor 1.3 in the same centrality range. A comparison with the available data is presented.
© Springer-Verlag, 2003
