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arXiv · 1708.08862

Heavy and heavy-light mesons and the Lorentz structure of the quark-antiquark interaction

Sofia Leitão·Alfred Stadler·M. T. Peña·Elmar P. Biernat
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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.

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Sofia Leitão, Alfred Stadler, M. T. Peña, Elmar P. Biernat. 2017-08-29. Heavy and heavy-light mesons and the Lorentz structure of the quark-antiquark interaction. https://arxiv.org/abs/1708.08862

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