Journal
PHYSICS LETTERS B
Volume 750, Issue -, Pages 100-106Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2015.08.042
Keywords
Confinement; Continuum QCD; Diquark clusters; Dynamical chiral symmetry breaking; Nucleon form factors
Funding
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-AC02-06CH11357]
- postdoctoral IUFFyM contract at Universidad de Salamanca, Spain
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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. (C) 2015 Argonne National Laboratory and The Authors. Published by Elsevier B.V.
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