Nucleon-number scalings of anisotropic flows and nuclear modification factor for light nuclei in the squeeze-out region

摘要: The number of nucleon (NN) scaling of the directed ow v1 and elliptic ow (v2) as well as the
nuclear modi#12;cation factor (Rcp) are tested for light nuclei which are produced in 0.4A GeV
Au +Au collisions at di#11;erent impact parameters with two di#11;erent in-medium nucleon-nucleon cross sections in a
framework of an isospin-dependent quantum molecular dynamics (IQMD) model. In that energy domain,
the emission of light nuclei can be well described by the squeeze-out phenonomenon. The results show a
nice NN scaling behavior for ow parameters v1, v2 and Rcp. These results demonstrate that the nucleon
coalescence mechanism is responsible for nucleon-number scaling of above physical observables in squeezeout region in heavy-ion collisions at intermediate energy.