Simulating spin dynamics with spin-dependent cross sections in heavy-ion collisions

Abstract

We have incorporated the spin-dependent nucleon-nucleon cross sections into a Boltzmann-Uehling-Uhlenbeck transport model for the first time, using the spin-singlet and spin-triplet nucleon-nucleon elastic scattering cross sections extracted from the phase-shift analyses of nucleon-nucleon scatterings in free space. We found that the spin splitting of the collective flows is not affected by the spin-dependent cross sections, justifying it as a good probe of the in-medium nuclear spin-orbit interaction. With the in-medium nuclear spin-orbit mean-field potential that leads to local spin polarization, we found that the spin-averaged observables, such as elliptic flows of free nucleons and light clusters, becomes smaller with the spin-dependent differential nucleon-nucleon scattering cross sections.

7 pages, 4 figures

References in corpus (14)

• Shell structure of superheavy nuclei in self-consistent mean-field models
• 200 A GeV Au+Au collisions serve a nearly perfect quark-gluon liquid
• Nucleon-nucleon cross sections in neutron-rich matter and isospin transport in heavy-ion reactions at intermediate energies
• Microscopic Calculation of in-Medium Proton-Proton Cross Sections
• Nuclear Flow Excitation Function
• Light cluster production in intermediate energy heavy-ion collisions induced by neutron-rich nuclei
• The Nuclear Spin-Orbit Force in Chiral Effective Field Theories
• Isospin Dependence of Nucleon-Nucleon Elastic Cross Section
• Probing in-medium spin-orbit potential with intermediate-energy heavy-ion collisions
• Spin-orbit coupling and the up-down differential transverse flow in intermediate-energy heavy-ion collisions
• Correlation between elliptic flow and shear viscosity in intermediate-energy heavy-ion collisions
• Dynamical effects of spin-dependent interactions in low- and intermediate-energy heavy-ion reactions
• Spin transport in intermediate-energy heavy-ion collisions as a probe of in-medium spin-orbit interactions
• Equations of motion of test particles for solving the spin-dependent Boltzmann-Vlasov equation

Cited by in corpus (7)

• Nucleon spin polarization in intermediate-energy heavy-ion collisions
• Spin dynamics in intermediate-energy heavy-ion collisions with rigorous angular momentum conservation
• Probing properties of nuclear spin-orbit interaction with nucleon spin polarization in intermediate-energy heavy-ion collisions
• Spin polarization from nucleon-nucleon scatterings in intermediate-energy heavy-ion collisions
• Investigating the possibility of extracting neutron-skin thickness in nuclei by their collisions at intermediate energies
• Transport properties of asymmetric nuclear matter in the spinodal region
• Is nucleon spin thermalized in intermediate-energy heavy-ion collisions?