Baryon and Antibaryon Production in Hadronic and Nuclear Interactions

Abstract

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 $\Lambda$'s and $\Xi$'s but is five times too small for $\Omega$'s. Introducing final state interactions, a reasonable description of all baryon and antibaryon yields is achieved.

17 pages, 4 postscript figures

References in corpus (1)

• Charmonium Suppression in Lead-Lead Collisions: Is There a Break in the $J/\psi$ Cross-Section?

Cited by in corpus (5)

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• Comparison of Strangeness Production between A+A and p+p Reactions from 2 to 160 AGeV
• A Microscopic Picture of Strangeness Production at the SPS
• Midrapidity hyperon production in pp and pA collisions from low to LHC energies
• Hyperon Enhancement in the Dual Parton Model