The 8th International Conference on Chirality, Vorticity and Magnetic Field in Quantum Matter

Session

Hyperons

24 juil. 2024, 11:00

Amphitheater A11 (West University of Timisoara)

Présidents de session

Hyperons: Session 1

• Andrea Palermo (Stony Brook University)

59. Measurement of global and local spin polarization of $\mathrm{\Lambda }$ and $\overline{\mathrm{\Lambda }}$ in Au+Au collisions from the RHIC Beam Energy Scan-II (online)

Tong Fu

24/07/2024 11:00

On-line talk

Significant global hyperon polarization has been observed in non-central heavy ion collisions, providing evidence of the vorticity of the quark-gluon plasma (QGP). This effect can serve as a new probe for exploring the fluid properties of strongly interacting matter. A difference between the global polarization of $\overline{\mathrm{\Lambda }}$ and $\mathrm{\Lambda }$ could originate from the strong late-stage...

44. Hyperon polarization along the beam direction in pPb collision at CMS (online)

Chenyan Li (Shandong University)

24/07/2024 11:30

On-line talk

The observation of hyperon polarization along beam direction ($P_z$) in nucleus-nucleus collisions has opened a new way to study the complex vortical structures of the QGP. With the high-statistics data collected by the CMS experiment, we present the first $P_z$ results for $\mathrm{\Lambda }$ and $\overline{\mathrm{\Lambda }}$ particles in pPb collision at $\sqrt{s_{NN}}=8.16$ TeV over a wide transverse momentum and...

52. Global Hypertriton Polarization in Au+Au collisions at $\sqrt{s_{NN}}=7.7-200$ GeV (online)

Dai-Neng Liu

24/07/2024 12:00

On-line talk

Particles of non-zero spin produced in non-central heavy-ion collisions are expected to be polarized along the direction perpendicular to the reaction plane due to spin-orbit coupling in the produced matter, and this has indeed been observed for many hyperons and vector mesons. Here, we show that the hypertriton (${}_{\mathrm{\Lambda }}^3$H), which is the lightest hypernucleus, is also polarized in these...

79. Lambda-(anti)Lambda Spin Correlation in Heavy-Ion Collisions

Xin-Nian Wang (Central China Normal University)

24/07/2024 12:30

Talk

Recent experimental data indicate a strong phi vector meson spin alignment which can be explained as a result of a short distance correlation of fluctuating strong-force field. If such strong-force for strange quark exists in the late stage of heavy-ion collisions, it will also lead to spin-spin correlation of final state hyperons such as Lambda-(anti)Lambda. We calculate such spin-spin...