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Title: Bridging a gap between continuum-QCD and ab initio predictions of hadron observables

Within contemporary hadron physics there are two common methods for determining the momentum- dependence of the interaction between quarks: the top-down approach, which works toward an ab initiocomputation of the interaction via direct analysis of the gauge-sector gap equations; and the bottom-up scheme, which aims to infer the interaction by fitting data within a well-defined truncation of those equations in the matter sector that are relevant to bound-state properties. We unite these two approaches by demonstrating that the renormalisation-group-invariant running-interaction predicted by contemporary analyses of QCD’s gauge sector coincides with that required in order to describe ground-state hadron observables using a nonperturbative truncation of QCD’s Dyson–Schwinger equations in the matter sector. This bridges a gap that had lain between nonperturbative continuum-QCD and the ab initio prediction of bound-state properties.
Authors:
 [1] ;  [2] ;  [3] ; ORCiD logo [4]
  1. European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT*) and Fondazione Bruno Kessler, Villazzano (Italy)
  2. Univ. of Adelaide, SA (Australia). School of Chemistry and Physics.
  3. Univ. of Valencia, Valencia (Spain). Dept. of Theoretical Physics and IFIC.
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 742; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DYSON-SCHWINGER EQUATIONS; CONFINEMENT; DYNAMICAL; CHIRAL SYMMETRY BREAKING; FRAGMENTATION; GRIBOV COPIES; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Dyson–Schwinger equations; Confinement; Dynamical chiral symmetry breaking; Fragmentation; Gribov copies
OSTI Identifier:
1228135
Alternate Identifier(s):
OSTI ID: 1192105; OSTI ID: 1208945