Study of H-dibaryon mass in Lattice QCD
Takashi Inoue, for HAL QCD Collaboration
TL;DR
This paper investigates the mass and existence of the H-dibaryon using lattice QCD, focusing on the effects of flavor SU(3) symmetry breaking and solving coupled-channel equations to identify a resonant state.
Contribution
It presents a lattice QCD study of the H-dibaryon considering flavor symmetry breaking and solves coupled-channel equations with physical baryon masses.
Findings
Resonant H-dibaryon found between Lambda Lambda and N Xi thresholds.
Flavor SU(3) symmetry breaking affects the H-dibaryon properties.
Uses lattice QCD-derived potentials and coupled-channel analysis.
Abstract
After a brief review of discovery of the H-dibaryon in lattice QCD, effect of the flavor SU(3) symmetry breaking on the H-dibaryon is studied by basing on the baryon-baryon (BB) interactions extracted from QCD on the lattice. The Schrodinger equation for Lambda Lambda - N Xi -Sigma Sigma coupled-channel is solved with the physical baryon masses and the potentials obtained from QCD at the flavor SU(3) limit. A resonant H-dibaryon is found between Lambda Lambda and N Xi thresholds in this treatment.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research · Particle physics theoretical and experimental studies