Extending light WIMP searches to single scintillation photons in LUX - Akerib, DS; Alsum, S; Araujo, HM; Bai, X; Balajthy, J; Baxter, A; Beltrame, P; Bernard, EP; Bernstein, A; Biesiadzinski, TP; Boulton, EM; Boxer, B; et al. (Physical Review D: Particles, Fields, Gravitation and Cosmology, 2020)