Bonn 2020 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 25: Heavy-Ion Collisions and QCD Phases VI
HK 25.7: Talk
Wednesday, April 1, 2020, 15:30–15:45, J-HS G
Two-particle correlations with high-pT Λ baryons and KS0 mesons in pp collisions at ALICE — •Lucia Anna Husova for the ALICE collaboration — Westfälische Wilhelms Universität, Münster, Germany
Due to the high particle multiplicities produced in Pb-Pb collisions, low-energy jets are difficult to reconstruct using standard jet algorithms. Two-particle correlations in Δη and Δϕ can instead be used to study jets, their properties and their particle composition. In this work, two-particle correlations between a high-momentum KS0 meson, Λ baryon, or Λ baryon (V0s) and charged hadrons are used to study strange particle production in jets. Recent ALICE results on the production of strange particles in small systems (pp and p-Pb collisions) reveal the possibility that similar strange quark production mechanisms could be present in all collision systems. Thus the per-trigger yields of the associated hadrons were studied on both the near-side and away-side of the V0-h and h-V0 correlation functions as a function of the transverse momenta of the trigger and associated particles as well as the event multiplicity in pp collisions at √s = 13 TeV collected with the ALICE experiment at the LHC. Moreover the h-h correlations were used as basis for the per-trigger yield ratios, which were compared to different MC generators.