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arXiv · hep-ph/9702411

The analytic structure of heavy quark propagators

C. J. Burden
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Abstract

The renormalised quark Dyson-Schwinger equation is studied in the limit of the renormalised current heavy quark mass m_R --> infinity. We are particularly interested in the analytic pole structure of the heavy quark propagator in the complex momentum plane. Approximations in which the quark-gluon vertex is modelled by either the bare vertex or the Ball-Chiu Ansatz, and the Landau gauge gluon propagator takes either a gaussian form or a gaussian form with an ultraviolet asymptotic tail are used.

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C. J. Burden. 1997-09-29. The analytic structure of heavy quark propagators. https://doi.org/10.1103/physrevd.57.276

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