Twist-3 partonic distributions from lattice QCD

2021/07/27 by Bhattacharya, Shohini, Cichy, Krzysztof, Constantinou, Martha +3
#FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2107.12818

Abstract

Twist-3 partonic distributions contain important information that characterizes nucleon's structure. In this work, we show our lattice exploration of the twist-3 PDFs g_T(x), and h_L(x). We also present our preliminary results on the twist-3 GPD G₂(x). We use the quasi-distribution approach to connect the lattice-extracted matrix elements, renormalized in the RI/MOM scheme, to light-cone distributions, applying the matching procedure that we developed in parallel. We also calculate the twist-2 counterparts of g_T(x) and h_L(x), i.e. g₁(x), and h₁(x), and test the Wandzura-Wilczek approximation.

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