On the twist-3 contribution to h_L in the instanton vacuum
B. Dressler, M.V. Polyakov
TL;DR
This paper demonstrates that in the instanton model of the QCD vacuum, the twist-3 contributions to the polarized structure function h_L are parametrically small, owing to the diluteness of the instanton vacuum.
Contribution
It reveals the smallness of twist-3 contributions to h_L within the instanton vacuum model, highlighting the impact of vacuum diluteness on polarized structure functions.
Findings
Twist-3 contributions to h_L are parametrically small.
The smallness is linked to the diluteness of the instanton vacuum.
Supports the relevance of instanton models in polarized structure functions.
Abstract
We show that the instanton model of the QCD vacuum indicates the parametric smallness of the twist-3 contributions to the polarized structure function h_L. This smallness is related to the diluteness of the QCD instanton vacuum.
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