From femtoscopic measurements at the LHC to the core of Neutron Stars

by Raffaele Del Grande (Faculty of Nuclear Sciences and Physical Engineering, CTU in Prague)

Thursday 4 Jun 2026, 14:00 → 15:00 Europe/Prague

Abstract: 

Neutron stars provide a unique environment for studying matter at densities far beyond those reached in ordinary nuclei. In such conditions, strange baryons, such as Λ and Ξ hyperons, may appear in the stellar core. Their presence, however, reduces the maximum neutron-star mass below the values observed astrophysically. Resolving this issue requires a better understanding of hyperon–nucleon interactions, particularly hyperonic three-body forces. So far, efforts to include three-body contributions in the calculations have relied on limited experimental input from hypernuclei, used to constrain the low-energy constants of effective field theories. Existing data remain scarce, especially for Ξ hyperon systems. Femtoscopic measurements in high-energy collisions at the LHC offer a complementary approach to probe hyperon–nucleon–nucleon interactions, with preliminary studies of the p–p–Λ correlation function indicating sensitivity to three-body forces. In this contribution, recent measurements and developments in p–p–Λ correlations across different collision systems are presented, together with new results on p–p–Ξ correlations probing systems with double strangeness and future perspectives.

 

 

The seminar will be held in the Dvořák hall, FZU, Pod Vodárenskou věží 1, Prague.

Location: https://goo.gl/maps/wEf7PsiLimSXMZhE9

 

The seminar will be also available via ZOOM video conference system:

Meeting ID: 674 9629 6646
Passcode: 575511

or join meeting via direct ZOOM link

 

invitation_2026_06_04_Del_Grande.pdf