Search for an Invisible Z^{'} in a Final State with Two Muons and Missing Energy at Belle II. - Adachi I; Adamczyk K; Aggarwal L; Ahmed H; Aihara H; Akopov N; Aloisio A; Anh Ky N; Asner DM; Aushev T; Aushev V; Bae H; et al. (Physical review letters, 2023)