Disappearance of partonic collectivity in √sNN = 3 GeV Au+Au collisions at RHIC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00559794" target="_blank" >RIV/61389005:_____/22:00559794 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.physletb.2022.137003" target="_blank" >https://doi.org/10.1016/j.physletb.2022.137003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2022.137003" target="_blank" >10.1016/j.physletb.2022.137003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Disappearance of partonic collectivity in √sNN = 3 GeV Au+Au collisions at RHIC

Popis výsledku v původním jazyce

We report on the measurements of directed flow v(1) and elliptic flow v(2) for hadrons (pi(+/-), K-+/-, K-S(0), p, phi, Lambda and Xi(-)) from Au+Au collisions at root s(NN) = 3GeV and v(2) for (pi(+/-), K-+/-, p and (p) over bar) at 27 and 54.4GeV with the STAR experiment. While at the two higher energy midcentral collisions the number-of-constituent-quark (NCQ) scaling holds, at 3GeV the v(2) at midrapidity is negative for all hadrons and the NCQ scaling is absent. In addition, the v(1) slopes at midrapidity for almost all observed hadrons are found to be positive, implying dominant repulsive baryonic interactions. The features of negative v2 and positive v(1) slope at 3GeV can be reproduced with a baryonic mean-field in transport model calculations. These results imply that the medium in such collisions is likely characterized by baryonic interactions.

Název v anglickém jazyce

Disappearance of partonic collectivity in √sNN = 3 GeV Au+Au collisions at RHIC

Popis výsledku anglicky

We report on the measurements of directed flow v(1) and elliptic flow v(2) for hadrons (pi(+/-), K-+/-, K-S(0), p, phi, Lambda and Xi(-)) from Au+Au collisions at root s(NN) = 3GeV and v(2) for (pi(+/-), K-+/-, p and (p) over bar) at 27 and 54.4GeV with the STAR experiment. While at the two higher energy midcentral collisions the number-of-constituent-quark (NCQ) scaling holds, at 3GeV the v(2) at midrapidity is negative for all hadrons and the NCQ scaling is absent. In addition, the v(1) slopes at midrapidity for almost all observed hadrons are found to be positive, implying dominant repulsive baryonic interactions. The features of negative v2 and positive v(1) slope at 3GeV can be reproduced with a baryonic mean-field in transport model calculations. These results imply that the medium in such collisions is likely characterized by baryonic interactions.

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

827

Číslo periodika v rámci svazku

APR

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

137003

Kód UT WoS článku

000820935000044

EID výsledku v databázi Scopus

2-s2.0-85125955273