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HK: Fachverband Physik der Hadronen und Kerne
HK 71: Hadron Structure and Spectroscopy X
HK 71.1: Talk
Thursday, March 14, 2024, 15:45–16:00, HBR 62: EG 19
Measurement of mass A=4 hypernuclei in LHC Run 3 with ALICE — •Michael Hartung for the ALICE Germany collaboration — Institut für Kernphysik, Goethe Universität, Frankfurt, Germany
Hypernuclei are bound states that contain ordinary nucleons as well as hyperons (e.g. Λ). Their investigation allows the study of the hyperon-nucleon interaction, which can only be studied to limited extend by scattering experiments.
The most prominent example is the (anti)hypertriton, which is a bound state of a proton, a neutron and a Λ hyperon. It has been measured by the ALICE Collaboration in Run 1 and Run 2 of the Large Hadron Collider at CERN. The production of hypernuclei with mass A=4 is strongly suppressed compared to the (anti)hypertriton, thus an exact measurement of their properties has been impossible so far. Due to the high-interaction rate and the continuous readout of the ALICE detectors in RUN 3, a precise measurement of two mass A=4 hypernuclei, namely hyperhydrogen-4 and hyperhelium-4, will be possible for the first time. We will present the latest results of the production measurement of both hypernuclei in Run 3 Pb–Pb collisions at √sNN=5.36 TeV.
Keywords: Hypernuclei; ALICE; LHC