Bai, Haoyang and Hua, Jun and Ji, Xiangdong and Jiang, Xiangyu and Liang, Jian and Schäfer, Andreas and Wang, Wei and Yang, Yi-Bo and Zhang, Jian-Hui and Zhang, Jialu and Zhang, Mu-Hua and Zhang, Qi-An (2025) Hybrid renormalization for distribution amplitude of a light baryon in large momentum effective theory. PHYSICAL REVIEW D, 112 (11): 114515. ISSN 2470-0010, 2470-0029
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Light cone distribution amplitudes for a light baryon can be extracted through the simulation of the quasi-distribution amplitudes (quasi-DAs) on the lattice. We implement the hybrid renormalization for the quasi-DAs of light baryons. Lattice simulations are performed using Nf 1/4 2 & thorn; 1 stout-smeared clover fermions and a tree-level Symanzik-improved gauge action, with three lattice spacings of 0.105, 0.077, 0.052 fm. By analyzing zero-momentum matrix elements for different lattice spacings, we extract the linear divergence associated with the Wilson-line self-energy. Matching to perturbative matrix elements in the MS scheme yields the residual self-renormalization factors. Using these factors, we renormalize the quasi-DAs within the hybrid scheme, which combines self-renormalization at large separations and the ratio scheme at short distances. The renormalized results demonstrate effective cancellation of linear divergences and yield smooth, continuumlike coordinate-space distributions suitable for subsequent Fourier transformation and perturbative matching. These results establish the viability of both self-and hybrid-renormalization frameworks for light baryon quasi-DAs, providing a robust foundation for LaMET-based determinations of light cone distribution amplitudes in future.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PION DISTRIBUTION AMPLITUDE; FORM-FACTORS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Mar 2026 07:46 |
| Last Modified: | 25 Mar 2026 07:46 |
| URI: | https://pred.uni-regensburg.de/id/eprint/68023 |
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