Exposing the dressed quark's mass
H.L.L. Roberts, L. Chang, I.C. Cloet, C.D. Roberts

TL;DR
This paper reviews recent advances in hadron physics using Dyson-Schwinger equations, highlighting how dynamical chiral symmetry breaking influences hadron properties and the dressed-quark mass function.
Contribution
It provides new insights into confinement, DCSB, and the dressed-quark mass function, with specific results on hadron spectrum and electromagnetic form factors.
Findings
Dressed-quark-core masses for nucleon and Delta calculated
Electromagnetic pion form factor affected by DCSB
Prediction of zero crossing in F_1^{p,d}/F_1^{p,u} at Q^2≈5m_N^2
Abstract
This snapshot of recent progress in hadron physics made in connection with QCD's Dyson-Schwinger equations includes: a perspective on confinement and dynamical chiral symmetry breaking (DCSB); a pre'cis on the physics of in-hadron condensates; results on the hadron spectrum, including dressed-quark-core masses for the nucleon and Delta, their first radial excitations, and the parity-partners of these states; an illustration of the impact of DCSB on the electromagnetic pion form factor, thereby exemplifying how data can be used to chart the momentum-dependence of the dressed-quark mass function; and a prediction that F_1^{p,d}/F_1^{p,u} passes through zero at Q^2\approx 5m_N^2 owing to the presence of nonpointlike scalar and axial-vector diquark correlations in the nucleon.
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Taxonomy
TopicsHermeneutics and Narrative Identity · Aging, Elder Care, and Social Issues · Health, Medicine and Society
