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Title: Quark model with chiral-symmetry breaking and confinement in the Covariant Spectator Theory

We propose a model for the quark-antiquark interaction in Minkowski space using the Covariant Spectator Theory. We show that with an equal-weighted scalar-pseudoscalar structure for the confining part of our interaction kernel the axial-vector Ward-Takahashi identity is preserved and our model complies with the Adler-zero constraint for pi-pi-scattering imposed by chiral symmetry.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. CFTP, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
  2. CFTP, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal ; Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
  3. CeFEMA, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
  4. Departamento de Física, Universidade de Évora, 7000-671 Évora, Portugal
  5. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Publication Date:
OSTI Identifier:
1252970
Report Number(s):
JLAB-THY-15-2019; DOE/OR/23177-3567; arXiv:1508.04304
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Journal Name: EPJ Web of Conferences; Journal Volume: 113; Conference: 21st International Conference on Few-Body Problems in Physics, May 18 - 22, 2015, Chicago, USA
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English