arXiv:1508.04304·v1·High Energy Physics — Phenomenology
Quark model with chiral-symmetry breaking and confinement in the Covariant Spectator Theory
Elmar P. Biernat🇵🇹 · M. T. Peña🇵🇹 · J. E. Ribeiro🇵🇹 · A. Stadler🇵🇹 · F. Gross🇺🇸
Abstract
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.
Comments: 4 pages, 2 figures; 21st International Conference on Few-Body Problems in Physics, May 18 - 22, 2015, Chicago, USA