Understanding the nucleon as a Borromean bound-state

Abstract

Analyses of the three valence-quark bound-state problem in relativistic quantum field theory predict that the nucleon may be understood primarily as a Borromean bound-state, in which binding arises mainly from two separate effects. One originates in non-Abelian facets of QCD that are expressed in the strong running coupling and generate confined but strongly-correlated colour-antitriplet diquark clusters in both the scalar-isoscalar and pseudovector-isotriplet channels. That attraction is magnified by quark exchange associated with diquark breakup and reformation. Diquark clustering is driven by the same mechanism which dynamically breaks chiral symmetry in the Standard Model. It has numerous observable consequences, the complete elucidation of which requires a framework that also simultaneously expresses the running of the coupling and masses in the strong interaction. Planned experiments are capable of validating this picture.

7 pages, 7 figures

References in corpus (16)

• Big-Bang Nucleosynthesis
• Gluon and ghost propagators in the Landau gauge: Deriving lattice results from Schwinger-Dyson equations
• Bridging a gap between continuum-QCD and ab initio predictions of hadron observables
• Non-perturbative comparison of QCD effective charges
• Dressed-quark anomalous magnetic moments
• pi- and rho-mesons, and their diquark partners, from a contact interaction
• Flavor decomposition of the elastic nucleon electromagnetic form factors
• Measurements of the Electric Form Factor of the Neutron up to Q2=3.4 GeV2 using the Reaction He3(e,e'n)pp
• Completing the picture of the Roper resonance
• Evidence for diquarks in lattice QCD
• Masses of ground and excited-state hadrons
• Role of diquark correlations and the pion cloud in nucleon elastic form factors
• Diquark correlations in baryons on the lattice with overlap quarks
• The Gluon Propagator with Two-loop Schwinger-Dyson Equations
• Determination of the strange nucleon form factors
• QCD and Hadron Physics

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• Quark-diquark potential and diquark mass from Lattice QCD
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• Emergent phenomena and partonic structure in hadrons
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• Flavour decomposition of electromagnetic transition form factors of nucleon resonances
• Valence-quark structure N* resonances from DSEs
• Excited light baryons from quark-gluon-level calculations
• Baryons in the Nambu Jona-Lasinio models
• Strong diquark correlations inside the proton