Quark Polarization in a Viscous Quark-Gluon Plasma

Details Quark Polarization in a Viscous Quark-Gluon Plasma Quark Polarization in a Viscous Quark-Gluon Plasma

2011-08-29

arxiv.org/abs/1108.5649v3

Phys. Rev. C84, 054910(2011)

Physics

Nuclear Physics

Nuclear Theory

8 Pages in RevTex with 7 figures. V2: typos corrected, new references added, matches published version

Scientific paper

Quarks produced in the early stage of non-central heavy-ion collisions could develop a global spin polarization along the opposite direction of the reaction plane due to the spin-orbital coupling via parton interaction in a medium that has finite longitudinal flow shear along the direction of the impact parameter. We study how such polarization evolves via multiple scattering in a viscous quark-gluon plasma with an initial laminar flow. The final polarization is found to be sensitive to the viscosity and the initial shear of local longitudinal flow.

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