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

Conference · Tue Mar 01 00:00:00 EST 2016 · EPJ Web of Conferences

DOI:https://doi.org/10.1051/epjconf/201611305004· OSTI ID:1252970

Biernat, Elmer P. ^[1]; Pena, Maria Teresa ^[2]; Ribiero, Jose' Emilio F. ^[3]; Stadler, Alfred ^[4]; Gross, Franz L. ^[5]

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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)

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.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1252970
• Report Number(s): JLAB-THY-15-2019; DOE/OR/23177-3567; arXiv:1508.04304
• Journal Information: EPJ Web of Conferences, Vol. 113; Conference: 21st International Conference on Few-Body Problems in Physics, May 18 - 22, 2015, Chicago, USA
• Country of Publication: United States
• Language: English