Speaker
Description
Pioneering studies by the ALICE Collaboration demonstrated the potential of employing femtoscopy to investigate and constrain baryon-baryon and baryon-meson interactions with unprecedented precision. This kind of interactions is particularly interesting since it is closely connected to the physics of neutron stars. In particular, one of the plausible hypotheses about the content of neutron stars is that neutrons and hyperons might be contained in the core. To obtain a better understanding of the composition of these objects, a detailed knowledge of the interaction of the constituents becomes mandatory. This kind of analyses is complementary to previous attempts to study the interaction with scattering experiments, which are difficult to conduct due to the instable nature of hyperon beams.
In this contribution, we present measurements of the ALICE Collaboration in pp collisions at √s = 7 and 13 TeV and p–Pb at √s$_{NN}$ = 5.02 TeV. The statistics of RUN 2 data provide a higher precision in the analysis of the p-p, p-Λ and Λ-Λ correlations, and additionally make it possible to probe the interaction of more exotic pairs such as p-K, p-Ξ, p-$\Omega$ and p-$\Sigma^{0}$. Newly developed analysis tools allow comparing the measured correlation function between the particle pairs of interest to theory predictions using either potentials or wave functions as input. This enables us to verify chiral and lattice calculations of the interaction and to constrain the corresponding scattering parameters.
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