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Instanton-driven Gluon Saturation

F. Schrempp·A. Utermann
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Abstract

We report on the interesting possibility of instanton-driven gluon saturation in lepton-nucleon scattering at small Bjorken-x. The explicitly known instanton gauge field serves as a concrete realization of an underlying non-perturbative saturation mechanism associated with strong classical fields. The conspicuous, intrinsic instanton size scale known from lattice simulations, turns out to determine the saturation scale. The ``colour glass condensate'' can be identified in our approach with the QCD-sphaleron state, dominating instanton-induced processes in the softer regime.

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F. Schrempp, A. Utermann. 2004-07-13. Instanton-driven Gluon Saturation. https://arxiv.org/abs/hep-ph/0407146

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