Collision centrality and system size dependences of light nuclei production via dynamical coalescence mechanism

Light (anti-)nuclei in relativistic heavy-ion collisions are considered to be formed by the coalescence mechanism of (anti-)nucleons present work. Using a dynamical phase-space model coupled with multi-phase transport (AMPT) model, we explore formation light clusters such as deuteron, triton and their anti-particles different centralities for $$^{197}$$ Au + at $$\sqrt{s_{NN}} = 39$$ GeV. The calculated transverse momentum spectra protons, deuterons, tritons comparable those experimental data from RHIC-STAR collaboration. Both parameters $$B_{2}$$ (anti-)deuteron $$B_{3}$$ increase well collision centrality, they measured values experiments. effect system size on production nuclei is also investigated $$^{10}$$ B B, $$^{16}$$ O O, $$^{40}$$ Ca Ca, systems central collisions. results show that yields size, while an opposite trend. It interesting see centrality dependence $$B_A$$ (A 2, 3), falls into same group, which further demonstrates probability proportional fireball. Furthermore, compare our other models, thermal analytic it seems description consistent each other.