Nucleon spin polarization in intermediate-energy heavy-ion collisions

Abstract

Based on a spin-dependent Boltzmann-Uehling-Uhlenbeck transport model with spin-dependent potentials incorporated using the lattice Hamiltonian method, we have studied the global spin polarization perpendicular to the reaction plane as well as the local spin polarization in the longitudinal direction in non-central intermediate-energy heavy-ion collisions, as an extension of similar studies in relativistic heavy-ion collisions. Both the global and the local spin polarizations are found to be mostly dominated by the time-odd component of the nuclear spin-orbit potential. Impacts of various theoretical uncertainties on the nucleon spin polarization as well as its dependence on the beam energy and impact parameter are discussed. Our study serves as a baseline for understanding the spin polarization mechanism of strongly interacting matter produced in heavy-ion collisions dominated by nucleon degree of freedom.

arXiv comment7 pages, 6 figures

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Cited by in corpus (8)

• Effects of a parallel electromagnetic field in three-flavor Nambu--Jona-Lasinio model
• Spin dynamics in intermediate-energy heavy-ion collisions with rigorous angular momentum conservation
• Revisiting angular momentum conservation in transport simulations of intermediate-energy heavy-ion collisions
• A spin-rotation mechanism of Einstein-de Haas effect based on a ferromagnetic disk
• Spin polarization from nucleon-nucleon scatterings in intermediate-energy heavy-ion collisions
• Probing properties of nuclear spin-orbit interaction with nucleon spin polarization in intermediate-energy heavy-ion collisions
• Transport Model Comparison Studies of Intermediate-Energy Heavy-Ion Collisions
• Is nucleon spin thermalized in intermediate-energy heavy-ion collisions?