1999/02/03 by A. Capella, E. G. Ferreiro, E.G. Ferreiro +2 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.1016/s0370-2693(99)00664-4
published as Phys.Lett. B459 (1999) 27-32 · 17 pages, 4 postscript figures
arxiv created 1999/02/03 · openalex publication_date 1999/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We introduce a new formulation of the diquark breaking mechanism which describes with no free parameters the huge nuclear stopping observed in central nucleus-nucleus collisions. Supplemented, in the dual parton model, with strings originating from diquark--antidiquark pairs from the nucleon sea, it gives a substantial increase of hyperon and antihyperon yields from pPb to central PbPb collisions. Compared to data, this increase is slightly underestimated for Λ's and Ξ's but is five times too small for Ω's. Introducing final state interactions, a reasonable description of all baryon and antibaryon yields is achieved.