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Twist-3 partonic distributions from lattice QCD
by Shohini Bhattacharya, Krzysztof Cichy, Martha Constantinou, Andreas Metz, Aurora Scapellato, Fernanda Steffens
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Submission summary
| Authors (as registered SciPost users): | Krzysztof Cichy |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2107.12818v1 (pdf) |
| Date accepted: | March 15, 2022 |
| Date submitted: | July 30, 2021, 3:39 p.m. |
| Submitted by: | Krzysztof Cichy |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Computational |
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 $\tilde{G}_2(x)$. 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. $g_1(x)$, and $h_1(x)$, and test the Wandzura-Wilczek approximation.
Published as SciPost Phys. Proc. 8, 057 (2022)
Anonymous on 2022-02-07 [id 2165]
The contribution makes a first attempt at lattice twist-3 calculations various PDFs. The paper is complete and well written. I recommend publication without any modification.