The Gell-Mann -- Okubo mass relation among baryons from fully-dynamical mixed-action lattice QCD
Silas R. Beane, Kostas Orginos, Martin J. Savage
TL;DR
This study uses advanced lattice QCD simulations to examine the Gell-Mann--Okubo mass relation among octet baryons, finding minimal deviations at various quark masses, thus supporting the relation's robustness.
Contribution
It provides the first fully-dynamical mixed-action lattice QCD calculation of the Gell-Mann--Okubo mass relation for octet baryons at multiple pion masses.
Findings
Deviations from the mass relation are small at all studied quark masses.
The results support the validity of the Gell-Mann--Okubo relation in lattice QCD.
The study demonstrates the effectiveness of mixed-action lattice QCD in baryon mass calculations.
Abstract
We explore the Gell-Mann--Okubo mass relation among the octet baryons using fully-dynamical, mixed-action (domain-wall on rooted-staggered) lattice QCD calculations at a lattice spacing of b ~ 0.125 fm and pion masses of m_pi ~ 290 MeV, 350 MeV, 490 MeV and 590 MeV. Deviations from the Gell-Mann--Okubo mass relation are found to be small at each quark mass.
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