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HK: Fachverband Physik der Hadronen und Kerne
HK 35: Heavy-Ion Collisions and QCD Phases VI
HK 35.5: Vortrag
Mittwoch, 12. März 2025, 18:30–18:45, HS 3 Chemie
Measurement of 3H and 3He production in pp collisions with ALICE at the LHC — •Matthias Herzer for the ALICE Germany collaboration — Institut für Kernphysik, Goethe Universität, Frankfurt, Germany
The production of (anti)nuclei in pp collisions at the LHC has become a major topic in the high-energy heavy-ion physics community. In fact, there is a huge overlap between different research directions, from astrophysics, particle and nuclear physics. For instance, the observation of antinuclei in space is considered as possible signature for dark matter, since they would originate from collisions of potential dark matter candidates among each other. We will present the study of the production of 3H and 3He in pp collisions at 13.6 TeV in data sets that were taken in LHC Run 3. Furthermore, we will show the measurement of the ratio of these nuclei. This is an important test of isospin symmetry, which is expected to hold at LHC energies, but can not be tested directly since neutrons are not accessible experimentally. Moreover, the ratio of 3H and 3He can be an important test of nuclei production models such as the coalescence model.
Keywords: ALICE Run 3; High-energy physics; pp collisions; particle physics; nuclear physics