Spin dynamics in intermediate-energy heavy-ion collisions with rigorous angular momentum conservation

Abstract

We have revisited the spin dynamics in intermediate-energy heavy-ion collisions based on the improved spin- and isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model, particularly with the constraint of rigorous angular momentum conservation incorporated. We have studied the spin polarization of free nucleons and tritons/${}^3$He as well as the spin alignment of deuterons, and predicted the flow splittings for their different spin states. We have also demonstrated that the spin-dependent potential may enhance dissipations and thus have a non-negligible effect on the spin-averaged transverse flow at low collision energies. When rigorous angular momentum conservation in each spin-dependent nucleon-nucleon collision is incorporated, it affects the overall dynamics, the flow, and also the spin polarization, while the effects of the spin-orbit potential on the spin-related observables are still appreciable. The well-developed SIBUU model could be further extended to include hyperons or vector mesons, or used as a hadronic afterburner for spin-related studies in relativistic heavy-ion collisions, with more inelastic channels incorporated in the future.

arXiv comment13 pages, 7 figures

References in corpus (40)

• An accurate nucleon-nucleon potential with charge-independence breaking
• Spin Hall effect
• The Chiral Magnetic Effect
• Global $\Lambda$ hyperon polarization in nuclear collisions: evidence for the most vortical fluid
• Chiral Magnetic and Vortical Effects in High-Energy Nuclear Collisions --- A Status Report
• Novel features of nuclear forces and shell evolution in exotic nuclei
• Charge separation induced by P-odd bubbles in QCD matter
• Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation
• Electromagnetic fields and anomalous transports in heavy-ion collisions --- A pedagogical review
• Density slope of the nuclear symmetry energy from the neutron skin thickness of heavy nuclei
• Spin Alignment of Vector Mesons in Non-central A+A Collisions
• Charge separation relative to the reaction plane in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Chiral magnetic wave at finite baryon density and the electric quadrupole moment of quark-gluon plasma in heavy ion collisions
• Polarization of $\Lambda$ ($\bar{\Lambda }$) hyperons along the beam direction in Au+Au collisions at $\sqrt{s_{{}_{NN}}}$ = 200 GeV
• Collective longitudinal polarization in relativistic heavy-ion collisions at very high energy
• Polarization and Vorticity in the Quark Gluon Plasma
• Shear-induced spin polarization in heavy-ion collisions
• Spin-thermal shear coupling in a relativistic fluid
• Pattern of Global Spin Alignment of $\varphi$ and $K^{\ast 0}$ mesons in Heavy-Ion Collisions
• Light cluster production in intermediate energy heavy-ion collisions induced by neutron-rich nuclei
• Light nuclei quasiparticle energy shift in hot and dense nuclear matter
• Observation of charge asymmetry dependence of pion elliptic flow and the possible chiral magnetic wave in heavy-ion collisions
• What can we learn from global spin alignment of $\varphi$ meson in heavy-ion collisions?
• Constrained Molecular Dynamics II: a N-body approach to nuclear systems
• Spin alignment of vector mesons in heavy-ion collisions
• Spin Polarizations in a Covariant Angular-Momentum-Conserved Chiral Transport Model
• Spin-Excitation Mechanisms in Skyrme-Force Time-Dependent Hartree-Fock
• Feed-down effect on $\Lambda$ spin polarization
• Polarization transfer in hyperon decays and its effect in relativistic nuclear collisions
• The Skyrme Tensor Force in Heavy Ion Collisions
• Analytical coalescence formula for particle production in relativistic heavy-ion collisions
• Influence of the tensor interaction on heavy-ion fusion cross sections
• 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
• 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
• Nucleon spin polarization in intermediate-energy heavy-ion collisions
• Equations of motion of test particles for solving the spin-dependent Boltzmann-Vlasov equation
• Simulating spin dynamics with spin-dependent cross sections in heavy-ion collisions
• Revisiting angular momentum conservation in transport simulations of intermediate-energy heavy-ion collisions

Cited by in corpus (4)

• 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
• Angular momentum conservation and pion production in intermediate-energy heavy-ion collisions
• Is nucleon spin thermalized in intermediate-energy heavy-ion collisions?