EPJ Web Conf.
Volume 113, 201621st International Conference on Few-Body Problems in Physics
|Number of page(s)||4|
|Published online||25 March 2016|
Quark model with chiral-symmetry breaking and confinement in the Covariant Spectator Theory
1 CFTP, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
2 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 (JLab), Newport News, Virginia 23606, USA
a e-mail: firstname.lastname@example.org
Published online: 25 March 2016
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 π-π-scattering imposed by chiral symmetry.
© Owned by the authors, published by EDP Sciences, 2016
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