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23 August 2021 to 7 October 2021
Venue: OAC conference center, Kolymbari, Crete, Greece. Participation is possible also via internet.
Europe/Athens timezone

Effect of hardronization on Lambda polarization in heavy ion collisions

27 Aug 2021, 12:00
30m
Room 4

Room 4

Speaker

Prof. Yilong Xie (China University of Geosciences(Wuhan))

Description

With the PICR hydrodynamic model, we study the polarization splitting between $\Lambda$ and $\bar{\Lambda}$ at RHIC BES energy range, based on the meson field mechanism. Our results fit to the experimental data fairly well.
Besides, two unexpected effect emerges: (1) the baryon density gradient has non-trivial and negative contribution to the polarization splitting; (2) for 7.7 GeV Au+Au collisions within the centrality range of 20\%-50\%, the polarization splitting surprisingly increases with the centrality decreases. The second effect might help to explain the significant signal of polarization splitting measured in STAR's Au+Au 7.7 Gev collisions..

Details

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Internet talk Yes

Primary authors

Prof. Yilong Xie (China University of Geosciences(Wuhan)) Gang Chen (China University of Geosciences) Laszlo Pal Csernai (University of Bergen)

Presentation materials