arXiv:1011.5906·v1·High Energy Physics — Lattice
Lattice Results for Low Moments of Light Meson Distribution Amplitudes
R. Arthur🇬🇧 · P.A. Boyle🇬🇧 · D. Brömmel🇬🇧 · M.A. Donnellan🇩🇪 · J.M. Flynn🇬🇧 · A. Jüttner🇨🇭 · T.D. Rae🇬🇧 · C.T.C. Sachrajda🇬🇧
Abstract
As part of the UKQCD and RBC collaborations' N_f=2+1 domain-wall fermion phenomenology programme, we calculate the first two moments of the light-cone distribution amplitudes of the pseudoscalar mesons pion and kaon and the (longitudinally-polarised) vector mesons rho, K-star and phi. We obtain the desired quantities with good precision and are able to discern the expected quark-mass dependence of SU(3)-flavour breaking effects. An important ingredient of the calculation is the nonperturbative renormalisation of lattice operators using the RI'/MOM technique.
Comments: 21 pages, 9 figures