Probing strangeness canonical ensemble with K–, ɸ(1020) and Ξ– production in Au+Au collisions at √sNN=3 GeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00560211" target="_blank" >RIV/61389005:_____/22:00560211 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.physletb.2022.137152" target="_blank" >https://doi.org/10.1016/j.physletb.2022.137152</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2022.137152" target="_blank" >10.1016/j.physletb.2022.137152</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Probing strangeness canonical ensemble with K–, ɸ(1020) and Ξ– production in Au+Au collisions at √sNN=3 GeV

Popis výsledku v původním jazyce

We report the first multi-differential measurements of strange hadrons of K-, phi and Xi(-) yields as well as the ratios of phi/K- and phi/Xi(-) in Au+Au collisions at root S-NN = 3 GeV with the STAR experiment fixed target configuration at RHIC. The phi mesons and Xi(-) hyperons are measured through hadronic decay channels, phi -> K+K- and Xi(- )-> Lambda pi(-). Collision centrality and rapidity dependence of the transverse momentum spectra for these strange hadrons are presented. The 4 pi yields and ratios are compared to thermal model and hadronic transport model predictions. At this collision energy, thermal model with grand canonical ensemble (GCE) under-predicts the phi/K- and phi/Xi(-) ratios while the result of canonical ensemble (CE) calculations reproduce phi/K-, with the correlation length r(c) similar to 2.7 fm, and phi/Xi(-), r(c) similar to 4.2 fm, for the 0-10% central collisions. Hadronic transport models including high mass resonance decays could also describe the ratios. While thermal calculations with GCE work well for strangeness production in high energy collisions, the change to CE at 3 GeV implies a rather different medium property at high baryon density.

Název v anglickém jazyce

Probing strangeness canonical ensemble with K–, ɸ(1020) and Ξ– production in Au+Au collisions at √sNN=3 GeV

Popis výsledku anglicky

We report the first multi-differential measurements of strange hadrons of K-, phi and Xi(-) yields as well as the ratios of phi/K- and phi/Xi(-) in Au+Au collisions at root S-NN = 3 GeV with the STAR experiment fixed target configuration at RHIC. The phi mesons and Xi(-) hyperons are measured through hadronic decay channels, phi -> K+K- and Xi(- )-> Lambda pi(-). Collision centrality and rapidity dependence of the transverse momentum spectra for these strange hadrons are presented. The 4 pi yields and ratios are compared to thermal model and hadronic transport model predictions. At this collision energy, thermal model with grand canonical ensemble (GCE) under-predicts the phi/K- and phi/Xi(-) ratios while the result of canonical ensemble (CE) calculations reproduce phi/K-, with the correlation length r(c) similar to 2.7 fm, and phi/Xi(-), r(c) similar to 4.2 fm, for the 0-10% central collisions. Hadronic transport models including high mass resonance decays could also describe the ratios. While thermal calculations with GCE work well for strangeness production in high energy collisions, the change to CE at 3 GeV implies a rather different medium property at high baryon density.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Physics Letters. B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

831

Číslo periodika v rámci svazku

AUG

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

137152

Kód UT WoS článku

000833529700001

EID výsledku v databázi Scopus

2-s2.0-85132377970