Non-perturbative dynamics of the heavy-light quark system in the non-recoil limit

Details Non-perturbative dynamics of the heavy-light quark system in the non-recoil limit Non-perturbative dynamics of the heavy-light quark system in the non-recoil limit

1997-03-20

arxiv.org/abs/hep-ph/9703377v2

Phys.Lett. B407 (1997) 167-173

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, LaTex, elsevier.sty, 2 figures included, minor changes, one reference added, to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(97)00749-1

Starting from the relativistic gauge-invariant quark-antiquark Green function we obtain the relevant interaction in the one-body limit, which can be interpreted as the kernel of a non-perturbative Dirac equation. We study this kernel in different kinematic regions, reproducing, in particular, for heavy quark the potential case and sum rules results. We discuss the relevance of the result for heavy-light mesons and the relation with the phenomenological Dirac equations used up to now in the literature.

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