Non-perturbative dynamics of the heavy-light quark system in the non-recoil limit
نویسنده
چکیده
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. 1 Alexander von Humboldt Fellow Preprint submitted to Elsevier Preprint 27 March 2008
منابع مشابه
Non-perturbative Dynamics of the Heavy-Light Quark System
We obtain the non-perturbative interaction kernel of the heavy-light quark system in a gauge-invariant approach. The potential and the sum rules limit are discussed. Some insight is given in the light quark interaction. INTRODUCTION The dynamics of a system composed by two heavy quarks is well understood in terms of a potential interaction (static plus relativistic corrections) obtained from th...
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