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Local Spin Polarization in 200 GeV Au+Au and 2.76 TeV Pb+Pb Collisions
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We calculated the azimuthal angle dependence of the local spin polarization of hyperons in 200 GeV Au+Au and 2.76 TeV Pb+Pb collisions in the framework of the (3+1)D viscous hydrodynamic model CLVisc with AMPT initial conditions encoding initial orbital angular momenta. We find that the azimuthal angle dependence of the hyperon polarization strongly depends on the choice of the spin chemical potential $\Omega_{\mu\nu}$. With $\Omega_{\mu\nu}$ chosen to be proportional to the temperature vorticity, our simulation shows coincidental results with the recent measurements at RHIC.
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Cited by 2 Pith papers
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Excitation function for global \Lambda polarization in relativistic heavy ion collisions with the Core Corona model
A Core-Corona model with field-theoretic vortical polarization computes the excitation function of global Lambda polarization in heavy-ion collisions and predicts a robust maximum near 3 GeV.
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Global polarization of $\Lambda$, $\Xi^{-}$, and $\Omega^{-}$ hyperons in Au+Au collisions at RHIC BES-II energies
Hydrodynamic calculations show Omega hyperon polarization exceeds that of Lambda and Xi due to spin but falls below STAR data, with particle-antiparticle splitting growing at lower energies and driven by chemical pote...
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