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Target Fragmentation at Polarized HERA: A Test of Universal Topological Charge Screening in QCD

D. de Florian·G. M. Shore·G. Veneziano
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Abstract

Topological charge screening has been proposed as the mechanism responsible for the anomalous suppression in the first moment of the polarized proton structure function -- the `proton spin' effect. An immediate consequence is that this suppression should be target-independent, since the screening is a fundamental property of the QCD vacuum. Here, we study the possibility of testing the target-independent suppression in semi-inclusive target fragmentation processes at polarized HERA.

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D. de Florian, G. M. Shore, G. Veneziano. 1997-11-17. Target Fragmentation at Polarized HERA: A Test of Universal Topological Charge Screening in QCD. https://arxiv.org/abs/hep-ph/9711353

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