Relating Euclidean correlators and light-cone correlators beyond leading twist
May 16, 2022
A perturbative matching procedure is needed in order to relate the parton quasi-distributions, that are calculable in lattice-QCD, to the corresponding light-cone distributions which enter physical processes. In the past, this type of matching has been studied extensively for twist-2 distributions. Here, we report on our recent calculation of matching coefficients for the twist-3 parton distributions $g_T(x)$, $e(x)$ and $h_L(x)$. A focus of the presentation are zero-mode contributions which pose a challenge for the matching procedure. We also briefly address the latest twist-3 matching results by other authors which include, in particular, quark-gluon-quark correlations.
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.