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Polarized $\phi$ meson rates with viscous corrections at RHIC

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arxiv 2407.10524 v1 pith:PM6B3AJ4 submitted 2024-07-15 nucl-th hep-ph

classification nucl-thhep-ph
keywords collisionsemissionflavorleadingmesonoctetorderspectral
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

We discuss the emission of $\phi$ mesons with longitudinal and transverse polarization in ultra-relativistic heavy ion collisions. In the hadronic phase and in leading order in the kaon diluteness, $\phi$ emission is isotropic and driven by the flavor singlet and octet vector spectral functions. At next to leading order, the emissivities receive a non-isotropic correction from the flavor octet spectral function, and the non-equilibrium contributions originating from the shear and bulk viscosities. Implications for the $\phi$ meson alignment in heavy-ion collisions are discussed.

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Cited by 1 Pith paper

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  1. Polarization of the $\phi$ meson in the hadronic phase with nucleon scatterings and a viscous hydrodynamic background

    hep-ph 2025-07 conditional novelty 5.0 of 10

    Kaon and nucleon rescattering plus viscous corrections in a Fluidum hydrodynamic background yield phi spin alignment consistent with zero, in disagreement with STAR data.

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