Exploring the low-momentum scattering of Λ–Λ, p–Ξ− and p–K pairs using femtoscopy

by Dimitar Mihaylov (TUM)

Monday 29 Oct 2018, 14:15 → 15:45 Europe/Berlin

3344 (TUM - Physics Department - Garching)

Femtoscopy measures the momentum correlation between particle pairs, which is theoretically linked to the spatial-temporal properties of particle emis- sion and to the two-particle interaction potential. This method is particularly sensitive to the low-relative-momentum region. This talk concentrates on the latest ALICE femtoscopic results obtained from pp collisions at 13 TeV and p–Pb collisions at 5.02 TeV.

In particular the ALICE data restricts the Λ–Λ scattering parameters and investigates the possible existence of a bound state. The p–Ξ− correlation pro- vides the first observation of an effect directly related to the strong interaction, which is compared to lattice predictions. The p–K− interaction is currently unconstrained at near-threshold energies, while the ALICE data provide high precision complementary information exactly in this energy domain.

As an outlook there will a discussion on the p–Λ correlation and its link to a deeper understanding of the particle emission source, as well on the future prospects of femtoscopy as a tool to study even more exotic pairs, e.g. p–Ω−.