Köln 2025 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 23: Poster

HK 23.25: Poster

Tuesday, March 11, 2025, 17:30–19:00, Foyer Physik

Investigation of strange dibaryons in the weak non-leptonic decay topologies with ALICE — •Zhanna Khuranova for the ALICE Germany collaboration — Institut für Kernphysik, Goethe Universität Frankfurt

Searches for exotica is currently a very active field at the LHC. LHCb has for instance discovered the pentaquark candidates P_c(4312)⁺, P_c(4380)⁺, P_c(4450)⁺ and the tetraquark state T_cc⁺. They all contain at least one charm quark. We are searching for strange exotics in high-energy nuclear collisions that should be produced abundantly at the LHC. These searches within the ALICE Collaboration include currently pentaquarks and dibaryons. The presented investigation focuses on the decay mode of (Ξ⁰p)_b into Λp. Whereas, the reconstruction is utilizing topological and kinematical selections. The analysis is currently performed in Run 2 data and will be conducted in Run 3 data in the next step. The main motivation for this particular search is connected to the H-dibaryon (uuddss), which was investigated in ALICE at the LHC and is expected to lie close to the Ξp threshold. The production from a formed QGP, well described within the thermal model, should admit an observation of such exotic states.

Keywords: Exotica; ALICE; LHC