Quark Matter 2023

Contribution List

112. Energy loss and chiral magnetic effect

Jeremy Hansen (Iowa State University)

05/09/2023, 17:30

Chirality

Poster

Poster Session

Chiral media, such as quark-gluon plasma, possess a number of unique properties originating from the quantum phenomenon of the chiral anomaly. These properties can be measured by observing the propagation of fast charged particles moving through the medium and the radiation produced in the process. We show how the chiral anomaly confers distinctive features onto the particle energy loss and...

184. Finite volume effects on the chiral magnetic effect

Matteo Buzzegoli

05/09/2023, 17:30

Chirality

Poster

Poster Session

In Heavy-Ion Collisions (HIC), the high temperature nuclear matter is expected to be produced with a chiral imbalance. The presence of a chiral imbalance can be detected in HIC by looking at observables related to the Chiral Magnetic Effect (CME). In off-central collisions,the nuclear matter also posses a very large vorticity. In order to preserve causality, a rotating system can not extend to...

255. Helical vortical effect and matter/anti-matter polarization asymmetry

Victor Ambrus

05/09/2023, 17:30

Chirality

Poster

Poster Session

It is well-known that vorticity induces polarization in quantum plasmas via chiral vortical effect (CVE). Besides the CVE-induced axial current, vorticity gives rise in the presence of a net baryon charge also to a helicity current via the novel helical vortical effect (HVE) [1], which is the focus of the present talk. The HVE and CVE applied together naturally explain the matter/anti-matter...

329. Hyperon Polarization in Isobar Collisions and Correlation of Global Polarization with Directed Flow from STAR

Kosuke Okubo

05/09/2023, 17:30

Chirality

Poster

Poster Session

The observation of hyperon polarization has revealed the existence of large vorticities in the medium created by heavy-ion collisions. Global polarization indicates vorticities perpendicular to the reaction plane due to the system's orbital angular momentum, while local polarization indicates vorticities along the beam direction due to anisotropic transverse expansion of the medium. With the...

111. Non-interdependent Collective Motions in Heavy-ion Collisions

Gang Wang (UCLA)

05/09/2023, 17:30

Chirality

Poster

Poster Session

The widely used Fourier expansion for studying collective motions in heavy-ion collisions implies that different modes of collectivity could be non-interdependent, driven by factorized actions in the created nuclear medium. Following this line of thought, we assume each non-dependent collective motion modulates the probability of particle emission with a single-harmonic Fourier expansion, and...

54. Polarization of vector mesons in non-equilibrium hydrodynamics with spin

Kayman Gonçalves

05/09/2023, 17:30

Chirality

Poster

Poster Session

We argue that spin alignment of hadrons of spin 1 and higher provide a unique window into the study of hydrodynamics with spin, because it is capable to probe non-equilibrium between spin density and vorticity.
This happens because most of the full 3X3 density matrix is in principle accessible experimentally, and non-zero off-diagonal matrix elements can be directly linked to such...

437. Search for the Chiral Magnetic Effect by Event Shape Engineering as a Function of Invariant Mass in Au+Au Collisions at $\sqrt{s_{NN}}$ = 200 GeV from STAR

Han-Sheng Li

05/09/2023, 17:30

Chirality

Poster

Poster Session

Chiral Magnetic Effect (CME) is a phenomenon in which electric charge is separated by a strong magnetic field from local domains of chirality imbalance and parity violation in quantum chromodynamics (QCD). The CME-sensitive observable, charge-dependent three-point azimuthal correlator $\Delta\gamma$, is contaminated by a major physics background proportional to the particle elliptic anisotropy...

82. Spin alignment of vector mesons by glasma fields

Di-Lun Yang (Institute of Physics, Academia Sinica)

05/09/2023, 17:30

Chirality

Poster

Poster Session

We explain how spin alignment of vector mesons can be induced by background color fields. Our study is based on the quantum kinetic theory of spinning quarks and antiquarks and incorporates the relaxation of the dynamically generated spin polarization. The spin density matrix of vector mesons is obtained by quark coalescence via the Wigner function and kinetic equation. Our approach predicts a...