Strangeness production in the new version of the Liège intranuclear cascade model
Résumé
The capabilities of the new version of the Liège intranuclear cascade model (labeled INCL++6 from now on) are presented in detail. This new version of INCL is able to handle strange particles, such as kaons and the Λ and Σ hyperons, and the associated reactions and also allows extending nucleon-nucleon collisions up to about 15–20 GeV incident energy. Compared to the previous version, new observables can be studied, e.g., kaon, hyperon, and hypernuclei production cross sections (with the use of a suitable de-excitation code) as well as aspects of kaon-induced spallation reactions. The main purpose of this paper is to present the specific ingredients of the new INCL version and its new features, notably the newly implemented variance reduction scheme. We also compare, for some illustrative strangeness production cases, theoretical results calculated using this version of INCL with experimental data.
Mots clés
Nuclear Reactions
strangeness: production
model: cascade
hypernucleus: production
strange particle
nucleon nucleon: interaction
hyperon: production
model: hadronic
isospin: symmetry
hadron hadron: interaction
total cross section
pi nucleon: interaction
K: spectrum
intranuclear cascade
nuclear reaction
rapidity spectrum
transverse momentum: momentum spectrum
numerical calculations