Zhang, R.R.ZhangJIUNN-WEI CHENJin, L.L.JinLin, H.-W.H.-W.LinSch?fer, A.A.Sch?ferSun, P.P.SunYang, Y.-B.Y.-B.YangZhang, J.-H.J.-H.ZhangZhao, Y.Y.Zhao2019-12-202019-12-202019https://scholars.lib.ntu.edu.tw/handle/123456789/437014We present the first lattice-QCD calculation of the kaon distribution amplitude using the large-momentum effective theory (LaMET) approach. The momentum-smearing technique has been implemented to improve signals at large meson momenta. We subtract the power divergence due to Wilson line to high precision using multiple lattice spacings. The kaon structure clearly shows an asymmetry of the distribution amplitude around x = 1/2, a clear sign of its skewness. Our result also prefers a broader distribution than the asymp-journal article10.1016/j.nuclphysb.2018.12.0202-s2.0-85059692324https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059692324&doi=10.1016%2fj.nuclphysb.2018.12.020&partnerID=40&md5=fa4a92103e89dadd713853b1176db66a