Speaker
Description
We present a lattice QCD calculation for the leading-twist Light-cone Distribution Amplitudes (LCDAs) of the Lambda and Proton, within the framework of Large-momentum Effective Theory (LaMET). The numerical computation employs CLQCD ensembles with stout smeared clover fermions and a Symanzik gauge action. In order to obtain reliable results in both perturbative and non-perturbative regions, we adopt a new Hybrid renormalization scheme and carry out simulations at 4 different lattice spacings: a = {0.052, 0.068, 0.077, 0.105} fm. To access the large momentum regime and facilitate matching to LCDAs, we simulate the quasi-Distribution Amplitudes (quasi-DAs) with hadron momenta Pz around 1~3 GeV. After renormalization and extrapolation, we present results for the distribution of momentum fractions for the two light quarks in Lambda and Proton.
