Hyperon polarization and its relation with directed flow in high-energy nuclear collisions

Jiang, Ze-Fang; Wu, Xiang-Yu; Cao, Shanshan; Zhang, Ben-Wei

doi:10.1103/physrevc.108.064904

Cited by 8 publications

(3 citation statements)

References 108 publications

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“…A minor difference is observed between Λ and Λ. Furthermore, the combination of thermal vorticity and shear tensor contributions results in a non-montonic p T dependence of −P y , due to their opposing effects [37]. This feature can be further investigated using more precise experimental data in the future.…”

Section: Global Polarization Of λ and λ Hyperonsmentioning

confidence: 92%

“…We employ a longitudinal tilted initial conditions developed in Refs. [36,37] to generate initial conditions for the QGP hydrodynamic simulation. Based on the Wood-Saxon distribution, the nuclear thickness function is given by…”

Section: Initial Condition: Modified 3d Optical Glauber Modelmentioning

confidence: 99%

“…In this work, following our previous works [36,37], we perform a study on the Λ and Λ global polarization in 19.6 GeV Au+Au collisions, using the viscous hydrodynamic model CLVisc [38] with a modified 3D optical Glauber model initial condition. Such hydrodynamic models and hybrid approaches have been widely used to simulate the nucleus-nucleus collisions at RHIC and the LHC energies, which successfully describe many final state observables such as multiplicity distribution, transverse momentum distribution, collective flow and spin polarization [24,28,[39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

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Exploring Global Polarization Splitting in Au+Au Collisions at sNN=19.6 GeV Using Viscous Hydrodynamic Model CLVisc

Ye,

Yuan,

Jiang

2023

Universe

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We present a systematic study of the global polarization of Λ and Λ¯ hyperons in Au+Au collisions at sNN=19.6 GeV using the viscous hydrodynamic model CCNU-LBNL-Viscous hydrodynamic model (CLVisc) with a modified 3D optical Glauber model initial condition. The global polarization splitting as a function of transverse momentum and rapidity is investigated. It is shown that the magnitude of the net baryon density and its longitudinal titled geometry at the initial stage both have significant effects on the global polarization splitting of Λ and Λ¯ hyperons. Specifically, an increase in the magnitude of the net baryon density leads to a corresponding minor increase in the global polarization splitting. Similarly, alterations in the tilted geometry of net baryon density results in significant changes in the splitting of the global polarization.

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Section: Global Polarization Of λ and λ Hyperonsmentioning

confidence: 92%

Section: Initial Condition: Modified 3d Optical Glauber Modelmentioning

confidence: 99%