Pulse-shape discrimination against low-energy Ar-39 beta decays in liquid argon with 4.5 tonne-years of DEAP-3600 data. - Adhikari P; Ajaj R; Alpízar-Venegas M; Amaudruz PA; Auty DJ; Batygov M; Beltran B; Benmansour H; Bina CE; Bonatt J; Bonivento W; Boulay MG; et al. (The European physical journal. C, Particles and fields, 2021)