Directed flow and hyperon polarization at RHIC BES from multi-fluid dynamics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00378029" target="_blank" >RIV/68407700:21340/24:00378029 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1051/epjconf/202429604003" target="_blank" >https://doi.org/10.1051/epjconf/202429604003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/202429604003" target="_blank" >10.1051/epjconf/202429604003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Directed flow and hyperon polarization at RHIC BES from multi-fluid dynamics

Popis výsledku v původním jazyce

We present directed flow of protons and pions, as well as mean polarization of Lambda and (Lambda) over bar hyperons computed for Au-Au collisions at v root s(NN) = 5...19.6 GeV in MUFFIN model. MUlti Fluid simulation for Fast IoN collisions, or MUFFIN, is a state-of-the-art 3-fluid dynamic model for simulating heavy-ion collisions in the region from a few to a hundred GeV center-of-mass energy. Whereas MUFFIN succeeds to reproduce basic observables in the collision energy range of interest, the slope of the directed flow at mid-rapidity is much steeper as compared to the data, it has unclear EoS dependence and final-state hadronic cascade affects this observable significantly. The excitation function of the. polarization shows a significant splitting between polarizations of Lambda and (Lambda) over bar, which challenges a widespread interpretation that the splitting is affected mainly by the late-stage magnetic field.

Název v anglickém jazyce

Directed flow and hyperon polarization at RHIC BES from multi-fluid dynamics

Popis výsledku anglicky

We present directed flow of protons and pions, as well as mean polarization of Lambda and (Lambda) over bar hyperons computed for Au-Au collisions at v root s(NN) = 5...19.6 GeV in MUFFIN model. MUlti Fluid simulation for Fast IoN collisions, or MUFFIN, is a state-of-the-art 3-fluid dynamic model for simulating heavy-ion collisions in the region from a few to a hundred GeV center-of-mass energy. Whereas MUFFIN succeeds to reproduce basic observables in the collision energy range of interest, the slope of the directed flow at mid-rapidity is much steeper as compared to the data, it has unclear EoS dependence and final-state hadronic cascade affects this observable significantly. The excitation function of the. polarization shows a significant splitting between polarizations of Lambda and (Lambda) over bar, which challenges a widespread interpretation that the splitting is affected mainly by the late-stage magnetic field.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

30th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2023)

ISBN

978-2-7598-9126-9

ISSN

2100-014X

e-ISSN

2100-014X

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

EDP Sciences

Místo vydání

Les Ulis Cedex A

Místo konání akce

Houston

Datum konání akce

3. 9. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001259605300048