Heavy and heavy-light mesons and the Lorentz structure of the quark-antiquark interaction
Abstract
We solve a Minkowski-space integral equation, derived in the Covariant Spectator Theory, for quark-antiquark bound states describing heavy and heavy-light mesons. The equation's kernel contains a one-gluon exchange interaction and a covariant generalization of a linear confining potential with a mixed scalar, pseudoscalar, and vector Lorentz structure, characterized by a continuous mixing parameter. We investigate to what extent the Lorentz structure of the confining kernel can be determined by fitting the mixing parameter to the meson spectrum.
- Publication:
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arXiv e-prints
- Pub Date:
- August 2017
- DOI:
- 10.48550/arXiv.1708.08862
- arXiv:
- arXiv:1708.08862
- Bibcode:
- 2017arXiv170808862L
- Keywords:
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- High Energy Physics - Phenomenology;
- Nuclear Theory
- E-Print:
- 6 pages, 4 figures, presented at the conference "Excited QCD 2017", 7-13 May 2017, Sintra, Portugal