QCD sum rule analysis of the field strength correlator

Details QCD sum rule analysis of the field strength correlator QCD sum rule analysis of the field strength correlator

1998-12-17

arxiv.org/abs/hep-ph/9812417v1

Phys.Lett.B452:379-386,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 1 figure

Scientific paper

10.1016/S0370-2693(99)00224-5

The gauge invariant two-point correlator for the gluon field strength tensor is analysed by means of the QCD sum rule method. To this end, we make use of a relation of this correlator to a two-point function for a quark-gluon hybrid in the limit of the quark mass going to infinity. From the sum rules a relation between the gluon correlation length and the gluon condensate is obtained. We briefly compare our results to recent determinations of the field strength correlator on the lattice.

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