We calculate the polarization of Lambda hyperons in Au-Au collisions at RHIC Beam Energy Scan in a state-of-the-art 3+1 dimensional cascade +viscous hydro model vHLLE+UrQMD. We find that the polarization of Lambdas in the out-of-plane direction decreases substantially with collision energy. We explore the connection between the polarization signal and thermal vorticity and discuss the feed-down and hadronic rescattering effects on the mean polarization of all produced Lambda hyperons.

Vorticity in the QGP liquid and hyperon polarization at the RHIC BES energies / Karpenko, Iurii; Becattini, Francesco. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - ELETTRONICO. - 779:(2017), pp. 0-0. (Intervento presentato al convegno 16th International Conference on Strangeness in Quark Matter, SQM 2016 tenutosi a Clark Kerr Campus of the University of California, Berkeley, usa nel 27 giugno-1 luglio 2016) [10.1088/1742-6596/779/1/012068].

Vorticity in the QGP liquid and hyperon polarization at the RHIC BES energies

BECATTINI, FRANCESCO
2017

Abstract

We calculate the polarization of Lambda hyperons in Au-Au collisions at RHIC Beam Energy Scan in a state-of-the-art 3+1 dimensional cascade +viscous hydro model vHLLE+UrQMD. We find that the polarization of Lambdas in the out-of-plane direction decreases substantially with collision energy. We explore the connection between the polarization signal and thermal vorticity and discuss the feed-down and hadronic rescattering effects on the mean polarization of all produced Lambda hyperons.
2017
16th International Conference on Strangeness in Quark Matter (SQM 2016)
16th International Conference on Strangeness in Quark Matter, SQM 2016
Clark Kerr Campus of the University of California, Berkeley, usa
27 giugno-1 luglio 2016
Karpenko, Iurii; Becattini, Francesco
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1082411
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