Direct Measurement of Diffusion Coefficients: Evidence for Diffusive Stochastic Heating in Collisionless Plasmas - Ervin, T; Bowen, TA; Mallet, A; Isenberg, PA; Klein, KG; Bale, SD; Chandran, BDG; Livi, R; Rahmati, A; Larson, DE (Physical Review Letters, 2026)