Speaker
Jun Hua
(SJTU)
Description
We present a lattice-QCD calculation of $\pi , K$ distribution amplitudes using large-momentum effective theory (LaMET). Our results are calculted at 130-MeV pion mass with three different lattice spacing: 0.06, 0.09 and 0.12 fm, using 2+1+1 flavors of highly improved staggered quarks (HISQ) ensembles generated by MILC collaboration. We use the hybrid renormalization scheme for quasi light-front correlations to properly renormalize both linear and logarithmic divergences in correlation functions at lattice spacing a. The light-cone distribution amplitude (LCDA) of $\pi, K$ are finally derived by inverse one-loop mathching from quasi distribution amplitude .
Author
Jun Hua
(SJTU)
