High-precision measurements of flow coefficients vₙ (n=1-4) for protons, deuterons and tritons relative to the first-order spectator plane have been performed in Au+Au collisions at √sNN=2.4 GeV with the High-Acceptance Di-Electron Spectrometer (HADES) at the SIS18/GSI. Flow coefficients are studied as a function of transverse momentum pₜ and rapidity ycm over a large region of phase-space and for several classes of collision centrality. A clear mass hierarchy, as expected by relativistic hydrodynamics, is found for the slope of v₁, dv₁/dy′|y′=0 where y′ is the scaled rapidity, and for v₂ at mid-rapidity. Scaling with the number of nucleons is observed for the pₜ dependence of v₂ and v₄ at mid-rapidity, which is indicative for nuclear coalescence as the main process responsible for light nuclei formation. v₂ is found to scale with the initial eccentricity ⟨ϵ₂⟩, while v₄ scales with ⟨ϵ₂⟩² and ⟨ϵ₄⟩. The multi-differential high-precision data on v₁, v₃, and v₄ provides important constraints on the equation-of-state of compressed baryonic matter.
