The $H$-dibaryon from lattice QCD: past, present and future perspectives

by Davide Laudicina (Ruhr Universität Bochum)

Friday 5 Dec 2025, 14:30 → 15:15 Europe/Zurich

NB2/158 (RUB)

Abstract:

The existence of the $I=0$, $S=-2$ $H$ dibaryon remains one of the open questions in nuclear physics and, despite decades of experimental searches and extensive theoretical investigations, its existence has yet to be conclusively established. Lattice QCD provides a first-principles, systematically improvable framework to study hadron physics in a non-perturbative way and allows the extraction of scattering quantities through Lüscher's formalism. After briefly reviewing the status of lattice QCD studies of the $H$ dibaryon, I will present our results both in the $SU(3)$ symmetric regime and at quark masses closer to the physical point. This work is part of the ongoing efforts to determine the properties of hyperons and to establish whether the $H$ dibaryon exists down to physical quark masses.