QCD field strength correlator at the next-to-leading order

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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11 pages, LaTeX, 3 eps figures

Scientific paper

10.1016/S0370-2693(97)01352-X

The gauge invariant two-point correlation function of the gauge field strength tensor is calculated in perturbation theory at the next-to-leading order. Besides a direct calculation in perturbative QCD we also present a derivation of the correlation function in the heavy quark effective theory. Our results are briefly compared with recent determinations of the field strength correlator on the lattice.

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