Speaker
Description
Hypernuclei are bound states of nucleons and hyperons, expanding the nuclear chart to the strangeness dimension. The ALICE Collaboration has extensively studied the production of light (anti)hypernuclei across different colliding systems, providing constraints on hypernucleosynthesis models. In state-of-the-art coalescence models, hypernuclei emerge from nucleons and hyperons with overlapping wave functions, accounting for the size of the baryon-emitting source and the internal structure of the hypernucleus. Conversely, in statistical hadronization models, hypernuclei are treated similarly to other light-flavour hadrons. The accurate description of hypernuclei production implies more precise and differential measurements. In this contribution, the ALICE Collaboration presents recent hypernuclei measurements leveraging the data samples collected in the LHC Run 3. The first measurement of the hypertriton $p_{\mathrm{T}}$ spectrum in pp collisions is reported. This result, obtained with a dedicated offline software trigger, provides tight constraints on the modelling of the hypertriton wave function. Using the large samples collected with Pb beams, the first measurement of the azimuthal anisotropy of the hypertriton is obtained. In addition, searches for the bound $\Lambda\mathrm{nn}$ system are presented. These results provide novel insights on hypernuclear matter properties, as well as constraints on its formation mechanisms in the environment created in heavy-ion interactions.
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