Characterization of the astrophysical diffuse neutrino flux using starting track events in IceCube - Abbasi, R; Abbasi, R; Ackermann, M; Ackermann, M; Adams, J; Adams, J; Agarwalla, S K; Agarwalla, S K; Aguilar, J A; Aguilar, J A; Ahlers, M; Ahlers, M; et al. (PHYSICAL REVIEW D, 2024)