IFIC seminar: Precise tests of the hadron-hadron strong interaction via femtoscopy

por Dr. Otón Vázquez Doce (CERN)

martes 14 feb. 2023 12:00 → 14:00 Europe/Madrid

1001-Primera-1-1-1 - Paterna. Seminario (Universe)

The description and quantitative understanding of the strong interaction between hadrons is one of the most fundamental problems in nuclear physics and it is crucial to describe the evolution and the properties of matter under extreme conditions. Our experimental knowledge on interactions among nucleons is based mostly on scattering experiments and spectroscopy studies of stable and unstable nuclei, but such data lacks precision when strange particles are involved, and it is absent for the charm sector.

In this seminar, recent results from high energy nucleus-nucleus collision experiments using two-particle correlations in the momentum space will be presented. Such a method, called femtoscopy, enables a direct insight into short-range hadron-hadron strong interactions, delivering measurements with unprecedented precision in the strangeness sector, which constrain and test effective field theories and first principle calculations. The consequences for the equation of state for neutron-rich matter including strangeness and for the understanding of new hadronic states are discussed.

These measurements open a new avenue in experimental nuclear physics, with the potential of accessing the strong force between any hadron pair. It will be presented as well how the femtoscopy method is being extended to study the charm sector, genuine three-body interactions, and the formation mechanism of light nuclei.