Physics of the Power Corrections in QCD
F.V.Gubarev, M.I.Polikarpov, V.I. Zakharov
TL;DR
This paper reviews the physics of power corrections in QCD, focusing on infrared-sensitive contributions and nonperturbative effects at small distances, to better understand deviations from the parton model.
Contribution
It provides a comprehensive review of both infrared-sensitive and nonperturbative power corrections in QCD, highlighting their roles in the theory's accuracy.
Findings
Characterization of infrared-sensitive power corrections
Analysis of nonperturbative effects at small distances
Insights into deviations from the parton model
Abstract
We review the physics of the power corrections to the parton model. In the first part, we consider the power corrections which characterize the infrared sensitivity of Feynman graphs when the contribution of short distances dominates. The second part is devoted to the hypothetical power corrections associated with nonperturbative effects at small distances.
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