ERBL and DGLAP kernels for transversity distributions. Two-loop calculations in covariant gauge
S. V. Mikhailov, A. A. Vladimirov
TL;DR
This paper presents a detailed two-loop calculation of DGLAP and ERBL evolution kernels for transversity distributions in covariant gauge, analyzing their structure and impact on meson distribution amplitudes.
Contribution
It provides the first comprehensive two-loop calculation of these kernels in covariant gauge, enhancing understanding of transversity evolution.
Findings
Two-loop kernels are explicitly calculated in Feynman gauge.
The structure of the evolution kernels is thoroughly analyzed.
Two-loop evolution effects on meson distribution amplitudes are demonstrated.
Abstract
The results of a two-loop calculation in the Feynman gauge of both the DGLAP and the ERBL evolution kernels for transversely polarized distributions are presented. The structure of these evolution kernels is discussed in detail. In addition, the effect of the two-loop evolution on the distribution amplitude of a twist-2 transversely polarized meson is explored.
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