The distribution amplitude of the ${\eta }_c$ meson

Miguel Teseo San José Pérez, Benoît Blossier, Mariane Mangin-Brinet +1

We report on the first lattice determination of the pseudoscalar meson ${\eta }_c$ light-cone distribution amplitude, using a set of three CLS $N_f=2$ ensembles at a pion mass $m_π \sim…