Abstract
We review the two sources of hyperon enhancement in the dual parton model: strings originating from diquark-antidiquark pairs in the nucleon sea and net baryons containing two or three sea quarks with a yield controlled by the observed stopping. We show that by adding final state interactions (including strangeness exchange reactions as well as the inverse reactions required by detailed balance) with a single averaged cross section, σ = 0.2 mb, we can explain the observed hyperon enhancement in PbPb collisions at CERN SPS.
Highlights
The two sources of strangeness enhancement described above were studied in detail in refs. [1] and [2]
The initial densities are the ones obtained without final state interaction and the averaged cross-sections are taken to be the same for all processes
The possibility to neglect such reactions was qualitatively justified using the relative size of the initial densities involved [1, 2, 10], this was considered to be a crucial drawback of our model [11]
Summary
The two sources of strangeness enhancement described above were studied in detail in refs. [1] and [2]. The two sources of strangeness enhancement described above were studied in detail in refs. Final state interactions : πN → KΛ, πN → KΣ, πΛ → KΞ, πΣ → KΞ and πΞ → KΩ, (1)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
