Work

Hybrid renormalization with gradient flow for baryon quasidistribution amplitudes

Year: 2025

Type: article

Abstract: We establish a factorization relation between baryon quasidistribution amplitudes (quasi-DAs) defined with gradient flow and their counterparts renormalized in the MS ¯ scheme. Working beyond the small flow-time limit, we perform a complete one-loop calculation that yields the full matching kernel and the associated Wilson-line linear divergence for flowed quasi-DAs. Building on this relation, we formulate a hybrid renormalization scheme that combines ratio scheme with gradient-flow matching, thereby replacing fit-dependent self-renormalization and improving theoretical control over scheme conversion. The framework enables a systematic connection between lattice QCD matrix elements and continuum baryon quasi-DAs, with reduced renormalization uncertainties and clear guidance for practical lattice analyses.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/rm4s-wlfq

Authors: Jia-Lu Zhang, Mu-Hua Zhang

Institution: Shanghai Jiao Tong University

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: National Natural Science Foundation of China

Award: G2458414589