Webinar organizzato dai Laboratori Nazionali di Frascati nell'ambito del progetto europeo Strong 2020
Abstract: In this talk I will discuss how all hyperon-nucleon, kaon-nucleon and hyperon-hyperon interactions can be measured at the LHC and how a detailed knowledge of such interactions provides a fundamental reference for the equation of state of neutron stars. The measurement of correlations in momentum space (femtoscopy) applied to hyperon-proton, kaon-proton and hyperon-hyperon pairs produced in pp and p-Pb collisions at the LHC by the ALICE collaboration has revealed an unexpected sensitivity to the study of short-range strong interactions. For final states that have been investigated via scattering experiments in the past, such as K-p and Lp, the new results discussed in this talk show an improvement of an order of magnitude in precision. For final states that were so far not accessible, such as pXi, pOmega and Lambdad, first measurements are presented and used to test first principle calculations for the hadron-hadron interactions. Such interactions play possibly a role in the physics of neutron stars (NS), since the production of hyperons within the innermost core of NS depends on the interplay of two- and three-body interactions. Current results and future perspective at the LHC will be discussed in the context of the equation of state of neutron stars.