Bubble chain resummation and universality

Details Bubble chain resummation and universality Bubble chain resummation and universality

1995-12-02

arxiv.org/abs/hep-ph/9512213v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, Latex

Scientific paper

We propose a parameterization for contributions of an infinite set of diagrams (bubble chains) into physical observables represented as integrals of running coupling constant over the finite region in momentum space. The perturbation theory part of contributions is rendered well-defined by the principal value prescrition for treating the Landau pole while the rest is connected to the gluon condensate in case of observables allowing the OPE analysis. The hypothesis of universality, i.e. the use of our parameterization for non-OPE cases, is discussed.

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