Hadron-hadron interactions and nuclei production
March 27, 2023
June 21, 2023
In recent years, ALICE has carried out many measurements of the production of light nuclei in pp, p-Pb and Pb-Pb collisions at different energies. Even though a clear evolution with multiplicity is measured for many key observables, the theory interpretation of this evolution is still debated. In this contribution, the measurements of the ratio between the production yields of nuclei and protons and of the coalescence parameters $B_2$ as a function of multiplicity are shown and compared with the predictions of the statistical hadronisation model and of the coalescence model. Moreover, the measurement of the coalescence parameter $B_2$ in high-multiplicity pp collisions as a function of the transverse momentum is compared with theoretical predictions that take into account both the form of the nuclear wavefunction and the dependence of the source size on the transverse momentum of the nucleons. Finally the latest measurements of the hypertriton production are reported and compared with the available theoretical models.
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