Regular Article - Theoretical Physics
Dynamics of light hypernuclei in collisions of Au+Au at GeV energies
School of Physics and Optoelectronics, South China University of Technology, 510640, Guangzhou, China
Accepted: 13 November 2020
Published online: 11 January 2021
The dynamics of light hypernuclei and nuclear clusters produced in Au+Au collisions has been investigated thoroughly with a microscopic transport model. All possible channels of hyperon production and transportation of hyperons in nuclear medium are implemented into the model. The light complex fragments are recognized with the Wigner density approach at the stage of freeze out in nuclear collisions. The isospin diffusion in the collisions is responsible for the neutron-rich cluster formation. The collective flows of nuclear clusters are consistent with the experimental data from FOPI collaboration. It is found that the influence of the hyperon-nucleon potential on the free hyperons is negligible, but available for the light hypernuclide formation. The directed and elliptic flows of H and H at incident energies of 2, 2.5, 3, 3.5 and 4 GeV/nucleon are investigated thoroughly and manifest the same structure with the nuclear clusters. The hypernuclear yields are produced in a wide rapidity and momentum regime with increasing the beam energy.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021