21–29 Aug 2019
Europe/Athens timezone
ICNFP 2019 follows HiX 2019 (also at the OAC), Int. Workshop devoted to Nucleon Structure at Large Bjorken-x (https://indico.cern.ch/event/799284/overview). Related ICNFP Session organized with HiX 2019 convenors will take place the 22-23 August

Lambda and antilambda hyperon polarization in heavy-ion collisions within transport model

24 Aug 2019, 12:40
25m
Room 3

Room 3

Oral Presentation Parallel Session

Speaker

Oleksandr Vitiuk (Taras Shevchenko National University of Kyiv)

Description

Λ and Λ¯ polarization in heavy-ion collisions at BES RHIC energies is studied within the microscopic transport model UrQMD. We trace the formation and space-time evolution of vorticity and helicity patterns in details. This study demands a complex analysis of the fireball conditions including time slices, extraction of temperature and baryo- and strangeness chemical potentials, as well as freeze-out conditions of both hyperons. Rapidity and transverse momentum dependence of the polarization are obtained. We show that difference in global polarization of Λ and Λ¯ at c.m. energies below 10 GeV can be explained by different space-time freeze-out conditions of two hyperons. Comparison with the STAR results shows a fair agreement between the model and the data.

Primary authors

Oleksandr Vitiuk (Taras Shevchenko National University of Kyiv) Larisa Bravina (University of Oslo (NO)) Evgeny Zabrodin (University of Oslo (NO))

Co-authors

Alexander Sorin (Joint Institute for Nuclear Research (RU)) Oleg Teryaev (JINR)

Presentation materials

There are no materials yet.