Baryonic spin Hall effects in Au+Au collisions at $\sqrt{s_{NN}} = 7.7-200$ GeV

Acta Physica Polonica(2022)

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In this proceeding, we present our recent prediction on the local net Lambda polarization to search for the baryonic spin Hall effect (SHE) at RHIC BES energies. The baryonic SHE is induced by the gradients of baryon chemical potential, which leads to local polarization separation between baryons and anti-baryons. Based on hydrodynamic simulations with spin Cooper-Fryer formula, we propose to use $P^{{\rm net}}_{2,y}$ and $P^{{\rm net}}_{2,z}$, the second Fourier coefficients of net spin polarization to quantify this baryonic SHE. Future experimental observation of their non-trivial signatures could strongly support the existence of the baryon SHE in hot and dense QCD matter.
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