Abstract
We compute the effects of <G μν Gμν> condensate on the fine structure of 1S, 2S, 2P states in heavy quarkonium systems. Large perturbative corrections are found. The inapplicability of perturbation theory is a clear signal that models based on a random background field without any spatial cut-off are too naive to be reliable.
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Curci, G., Di Giacomo, A. & Paffuti, G. Gluon condensate effects on the fine structure of heavy quarkonium spectra. Z. Phys. C - Particles and Fields 18, 135–138 (1983). https://doi.org/10.1007/BF01572475
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DOI: https://doi.org/10.1007/BF01572475