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Diquark Masses from Lattice QCD

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arxiv hep-lat/9804023 v2 pith:EODWBCNW submitted 1998-04-16 hep-lat hep-ph

M. Hess , F. Karsch , E. Laermann , I. Wetzorke This is my paper · ORCID
classification hep-lathep-ph
keywords diquarkmassesspinanti-tripletcolourcorrelationevidencefind
verification ladder T0 review T1 audit T2 compute T3 formal
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We present first results for diquark correlation functions calculated in Landau gauge on the lattice. Masses have been extracted from the long distance behaviour of these correlation functions. We find that the ordering of diquark masses with spin 0 and 1 states in colour anti-triplet and sextet channels is in accordance with instanton motivated interaction models. Although we find evidence for an attractive interaction in colour anti-triplet states with a splitting between spin 0 and spin 1 diquarks that can account for the mass splitting between the nucleon and the delta, there is no evidence for a deeply bound diquark state.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Scalar diquarks in the QCD vacuum

    hep-ph 2026-06 unverdicted novelty 6.0 of 10

    A first-principles FRG approach to two-flavor QCD derives low-energy constants for the pion, sigma-meson and scalar diquark without parameters beyond QCD itself, including new diquark properties for color-superconduct...

  2. Diquark Correlators and Phase Structure in the Quark-Meson-Diquark Model beyond Mean Field

    hep-ph 2026-05 unverdicted novelty 6.0 of 10

    Including mesonic fluctuations beyond mean field substantially modifies the phase structure of the quark-meson-diquark model, with diquark condensation dominating for strong couplings as analyzed via diquark pole mass...

  3. Renormalizing the Quark-Meson-Diquark Model

    hep-ph 2025-05 conditional novelty 6.0 of 10

    Renormalized and two RG-consistent versions of the Quark-Meson-Diquark model reproduce the BCS relation and Stefan-Boltzmann limit at high density, while the sigma-delta scheme violates the BCS relation.

  4. Scalar diquark mass and quark--diquark potential from lattice QCD using the potential method with a static quark

    hep-lat 2026-06 unverdicted novelty 5.0 of 10

    Using lattice QCD, the scalar diquark mass is found to be close to (2/3) of the nucleon mass, and the quark-diquark potential is of Cornell type with string tension agreeing to within 5% of the static quark-antiquark ...

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