Bound H-dibaryon in the Flavor SU(3) Limit from a Full QCD Simulation on the Lattice

TL;DR

This study uses full QCD lattice simulations to investigate the existence of the H-dibaryon in the flavor SU(3) limit, revealing a bound state with a small binding energy across a range of meson masses.

Contribution

It demonstrates the first full QCD lattice evidence for a bound H-dibaryon in the flavor SU(3) symmetric limit using a novel baryon-baryon interaction approach.

Findings

Bound H-dibaryon with 20-50 MeV binding energy

Evidence across meson masses from 469 to 1171 MeV

Potential derived from Nambu-Bethe-Salpeter wave function

Abstract

Existence of the H-dibaryon in the flavor SU(3) symmetric limit is studied by full QCD simulations on the lattice, in the approach recently developed for the baryon-baryon (BB) interactions. Potential of the flavor-singlet BB channel is derived from the Nambu-Bethe-Salpeter wave function, and a bound H-dibaryon is discovered from it, with the binding energy of 20--50 MeV for the pseudo-scalar meson mass of 469--1171 MeV.