Stepping stone toward detecting gravitational wave memory: A cumulative analysis with the full (ℓ=2,m=0) spherical harmonic using events from GWTC-4.0 and GWTC-5.0RemoveMaria Rosselló-Sastre, Sascha Husa, Yumeng Xu, Jorge Valencia, Joan Llobera-Querol, and Antoni Ramos-BuadesPhys. Rev. D 114, 084037 (2026)
