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arXiv · 2507.19228

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

Eduardo Grossi·Andrea Palermo·Ismail Zahed
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Abstract

We extend our previous work on the spin alignment of the $\phi$ vector meson in the hadronic phase of the Quark Gluon Plasma, by including effects of nucleon scatterings. The emission rates are calculated in a realistic hydrodynamic background simulated with the code Fluid$u$m, for different beam energies. We find that all the effects taken into account cannot explain the out-of-plane spin alignment of the $\phi$ meson observed experimentally.

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Eduardo Grossi, Andrea Palermo, Ismail Zahed. 2025-07-25. Polarization of the $\phi$ meson in the hadronic phase with nucleon scatterings and a viscous hydrodynamic background. https://arxiv.org/abs/2507.19228

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