LaMET2020 Online

Matching for the twist-3 PDFs gT(x), e(x) and hL(x): success or failure?

11 Sept 2020, 10:30

30m

Zoom

Session I

Speaker

Shohini Bhattacharya (Graduate Student)

Description

The perturbative procedure of matching within Large Momentum Effective Theory connects the quasi-parton distributions to the light-cone distributions that enter physical processes. This procedure has demonstrated success in the extraction of the twist-2 PDFs from lattice QCD. We explore the formalism of matching, for the first time, for the twist-3 PDFs $g_T(x)$, $e(x)$ and $h_L(x)$. We make several non-trivial observations, all of which arise from the presence of singular zero-mode contributions in the perturbative results of the light-cone and quasi-PDFs. While matching seems possible for $g_T(x)$, zero-mode contributions could pose a challenge for the matching in the case of $e(x)$ and $h_L(x)$.

Presentation materials

Shohini_Lamet2020.pdf