Local spin polarization of $\Lambda$ hyperons and its interaction corrections

Cong Yi; Shuo Fang; Dong-Lin Wang; Shi Pu

Local spin polarization of $\Lambda$ hyperons and its interaction corrections

Nuclear Theory 2025-09-03 v1 High Energy Physics - Phenomenology

Authors: Cong Yi , Shuo Fang , Dong-Lin Wang , Shi Pu

Abstract

We have computed the second Fourier sine coefficient of the longitudinal spin polarization, $\langle P_{z} \sin 2(\phi_{p} - \Psi_{2}) \rangle$ , as a function of multiplicity or centrality in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV and in $p$ +Pb collisions at $\sqrt{s_{NN}} = 8.16$ TeV using the CLVisc hydrodynamic framework. The numerical results successfully describe the data in Au+Au collisions. However, understanding the data in $p$ +Pb collisions remains a puzzle. Additionally, we have reported some recent developments in quantum kinetic theory and spin hydrodynamics.

Keywords

hyperon polarization spin polarization and magnetic phenomena spin chains

Cite

@article{arxiv.2509.00377,
  title  = {Local spin polarization of $\Lambda$ hyperons and its interaction corrections},
  author = {Cong Yi and Shuo Fang and Dong-Lin Wang and Shi Pu},
  journal= {arXiv preprint arXiv:2509.00377},
  year   = {2025}
}

Comments

6 pages, 2 figures. Contribution to the proceedings of Quark Matter 2025

Local spin polarization of $\Lambda$ hyperons and its interaction corrections

Abstract

Keywords

Cite

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