Hybrid Renormalization for Baryon Distribution Amplitudes from Lattice QCD in LaMET

Abstract

In our recent work [1] on lattice QCD calculation of the baryon leading-twist LCDAs within the framework of LaMET, a novel hybrid renormalization scheme is implemented for octet baryon quasi-DAs, yielding reliable results across both perturbative and non-perturbative regions. The numerical simulations are performed using CLQCD ensembles with $N_f=2+1$ stout-smeared clover fermions and a Symanzik-improved gauge action. Calculations are carried out at three lattice spacings, $a=0.052,0.077,0.105$ fm. After renormalization, the linear divergences inherent in quasi-DAs are effectively removed, leading to smooth and well-behaved continuum coordinate-space distributions. These results demonstrate the viability of hybrid renormalization frameworks for light-baryon quasi-DAs and provide a robust foundation for future LaMET-based determinations of baryon LCDAs.

Comments: 8 pages, 9 figures, Proceedings for the 26th international symposium on spin physics (SPIN2025), 21-26 September, 2025, Qingdao (Tsingtao), Shandong Province, China