Accueil du site > Publications récentes > Inclusive Λ production in proton-proton collisions at 3.5 GeV
J. Adamczewski-Musch et al. (HADES Collaboration)
The inclusive production of Λ hyperons in proton-proton collisions at √s=3.18GeV
was measured with HADES at the GSI Helmholtzzentrum für
Schwerionenforschung in Darmstadt. The experimental data are compared to
a data-based model for individual exclusive Λ production channels in the same reaction. The contributions of intermediate resonances such as Σ(1385), Δ++, or N∗ are considered in detail. In particular, the result of a partial-wave analysis accounts for the abundant pK+Λ
final state. Model and data show a reasonable agreement at
midrapidities, while a difference is found for larger rapidities. A
total Λ production cross section in p+p collisions at √s=3.18GeV of σ(p+p→Λ+X)=207.3±1.3+6.0−7.3(stat.)±8.4(syst.)+0.4−0.5(model.)μb is found.
Voir en ligne : Phys. Rev. C 95, 015207 – Published 27 January 2017
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