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With the Field Correlator Method (FCM) for QCD, we show that the Chiral Vortical Effect (CVE) in hot (strongly-interacting) Quark-Gluon Plasma ((s)QGP) is modified by non-perturbative interactions: by Color-Magnetic confinement, and by…

High Energy Physics - Phenomenology · Physics 2024-02-02 Ruslan Abramchuk , Maik Selch

Based on the chiral kinetic approach using initial conditions from a multiphase transport model, we study the spin polarizations of quarks and antiquarks in non-central heavy ion collisions at the Relativistic Heavy Ion Collider. Because of…

Nuclear Theory · Physics 2017-08-23 Yifeng Sun , Che Ming Ko

We have studied the spin polarization of $\Lambda$ hyperons in heavy ion collisions at center-of-mass energies $\sqrt{s_{NN}} = 200$ GeV and $\sqrt{s_{NN}} = 5.02$ TeV carried out at RHIC and LHC colliders. We have calculated the mean spin…

Nuclear Theory · Physics 2024-07-25 Andrea Palermo , Eduardo Grossi , Iurii Karpenko , Francesco Becattini

We study the energy dependence of global polarization of $\Lambda$ hyperons in peripheral $Au-Au$ collisions. We combine the calculation of vorticity and strange chemical potential in the framework of kinetic Quark-Gluon String Model with…

Nuclear Theory · Physics 2018-04-25 Mircea Baznat , Konstantin Gudima , Alexander Sorin , Oleg Teryaev

Based on the chiral kinetic equations of motion, spin polarizations of various quarks, due to the magnetic field induced by spectator protons as well as the quark-antiquark vector interaction, are studied within a partonic transport…

Nuclear Theory · Physics 2019-04-19 Zhang-Zhu Han , Jun Xu

The formalism and applications of chiral perturbation theory for hadrons containing a single heavy quark are discussed. We emphasize the utility of working directly with the velocity dependent ``super'' fields which appear in the chiral…

High Energy Physics - Phenomenology · Physics 2011-07-19 Peter Cho

We argue that the enhancement in the spin polarization of anti-hyperons compared to the polarization of the hyperons in noncentral relativistic heavy-ion collisions arises as a result of an interplay between the chiral and helical vortical…

High Energy Physics - Phenomenology · Physics 2022-11-08 Victor E. Ambrus , M. N. Chernodub

In this paper the non-perturbative suppression of the Chiral Magnetic Effect (CME) is investigated in the deconfined region of the QCD phase diagram (as a model for Quark-Gluon Plasma (QGP) emerging in Heavy Ion Collisions (HIC)), using the…

High Energy Physics - Phenomenology · Physics 2025-03-25 Ruslan A. Abramchuk

We briefly review the thermal model predictions related to longitudinal spin polarization of $\Lambda-$hyperons emitted from a hot and rotating hadronic medium produced in the non-central relativistic heavy ion collisions.

High Energy Physics - Phenomenology · Physics 2022-08-04 Wojciech Florkowski , Avdhesh Kumar , Aleksas Mazeliauskas , Radoslaw Ryblewski

Experiments at the Relativistic Heavy Ion Collider (RHIC) have measured the net polarization of $\Lambda$ and $\bar{\Lambda}$ hyperons and attributed it to a coupling between their spin and the vorticity of the fluid created in heavy ion…

Nuclear Theory · Physics 2020-03-25 Joseph I. Kapusta , Ermal Rrapaj , Serge Rudaz

It has been proposed that the $\Lambda$ and $\overline{\Lambda}$ polarizations observed in heavy-ion collisions are due to the interaction between quark spin and thermal vorticity. In this work we report on a computation of the relaxation…

High Energy Physics - Phenomenology · Physics 2020-09-23 Alejandro Ayala , David de la Cruz , L. A. Hernández , S. Hernández-Ortíz , Jordi Salinas

Based on a generalized side-jump formalism for massless chiral fermions, which naturally takes into account the spin-orbit coupling in the scattering of two chiral fermions and the chiral vortical effect in a rotating chiral fermion matter,…

Nuclear Theory · Physics 2021-02-03 Shuai Y. F. Liu , Yifeng Sun , Che Ming Ko

Relativistic heavy-ion collisions create hot quark-gluon plasma as well as very strong electromagnetic (EM) and fluid vortical fields. The strong EM field and vorticity can induce intriguing macroscopic quantum phenomena such as chiral…

Nuclear Theory · Physics 2020-05-26 Yu-Chen Liu , Xu-Guang Huang

The vacuum is now understood to possess a rich and complex structure, characterized by fluctuating energy fields and a condensate of virtual quark-antiquark pairs. The spontaneous breaking of the approximate chiral symmetry, signaled by the…

High Energy Physics - Experiment · Physics 2026-02-10 The STAR Collaboration

Relativistic heavy-ion collisions give rise to the formation of both deconfined QCD matter and a strong magnetic field. The spin of heavy quarks is influenced by interactions with the external magnetic field as well as by random scatterings…

Nuclear Theory · Physics 2025-11-18 Zhiwei Liu , Yunfan Bai , Shiqi Zheng , Anping Huang , Baoyi Chen

The azimuthal angle dependence of quark spin polarization in the longitudinal beam direction of non-central relativistic heavy ion collisions is studied in the chiral kinetic approach. Contrary to the prediction from models based on the…

Nuclear Theory · Physics 2019-01-30 Yifeng Sun , Che Ming Ko

Experiments at the Relativistic Heavy Ion Collider (RHIC) have measured the net polarization of $\Lambda$ and $\bar{\Lambda}$ hyperons and attributed it to a coupling between their spin and the vorticity of the fluid created in heavy ion…

Nuclear Theory · Physics 2020-02-19 Joseph I. Kapusta , Ermal Rrapaj , Serge Rudaz

We report the measurements of global spin polarization of hyperons ($P_{\Lambda}$) from FAIR, RHIC and LHC energies. The $P_{\Lambda}$ continue to follow an increasing trend at $\sqrt{s_{\mathrm NN}}$ < 7.7 GeV indicating that enormous…

Nuclear Experiment · Physics 2023-03-22 Subhash Singha

We give a brief overview of recent theoretical and experimental results on the chiral magnetic effect and spin polarization effect in heavy-ion collisions. We present updated experimental results for the chiral magnetic effect and related…

High Energy Physics - Phenomenology · Physics 2020-08-05 Jian-Hua Gao , Guo-Liang Ma , Shi Pu , Qun Wang

The model combined with unitarity and impact parameter picture provides simple mechanism for generation of hyperon polarization in collision of unpolarized hadrons. We concentrate on a particular problem of $\Lambda$-hyperon polarization…

High Energy Physics - Phenomenology · Physics 2017-08-23 S. M. Troshin , N. E. Tyurin
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