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arXiv · 2510.14325

Hybrid Renormalization with Gradient Flow for Baryon Quasi-Distribution Amplitudes

Jia-lu Zhang·Mu-Hua Zhang
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Abstract

We establish a factorization relation between baryon quasi-distribution amplitudes (quasi-DAs) defined with gradient flow and their counterparts renormalized in the $\overline{MS}\,$ 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. 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.

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Jia-lu Zhang, Mu-Hua Zhang. 2025-10-16. Hybrid Renormalization with Gradient Flow for Baryon Quasi-Distribution Amplitudes. https://arxiv.org/abs/2510.14325

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