Open-Charm Hadron Measurements in Au+Au Collisions at root s(NN) = 200 GeV by the STAR Experiment

Kód výsledku v IS VaVaI

RIV/61389005:_____/19:00509939 - isvavai.cz

Výsledek na webu

https://doi.org/10.3390/universe5090196

DOI - Digital Object Identifier

10.3390/universe5090196

Jazyk výsledku

angličtina

Název v původním jazyce

Open-Charm Hadron Measurements in Au+Au Collisions at root s(NN) = 200 GeV by the STAR Experiment

Popis výsledku v původním jazyce

Study of the open-charm hadron production in heavy-ion collisions is crucial for understanding the properties of the Quark-Gluon Plasma. In these papers, we report on a selection of recent STAR measurements of open-charm hadrons in Au+Au collisions at . root s(NN) = 200 GeV, using the Heavy-Flavor Tracker. In particular, the nuclear modification factors of D-0 and D-+/- mesons, elliptic and directed flow of D-0 mesons, D-s/D-0 and Lambda(c)/D(0)yield ratios are discussed. The observed suppression of D(0 )and D-+/- mesons suggests strong interactions of the charm quarks with the QGP. The measured elliptic flow of D-0 mesons is large and follows the NCQ scaling, suggesting that charm quarks may be close to thermal equilibrium with the QGP medium. Both D-s/D-0 and Lambda(c) /D(0)yield ratios are found to be enhanced in Au+Au collisions. The enhancement can be explained by models incorporating coalescence hadronization of charm quarks. In addition, the directed flow of the D-0 mesons is measured to be negative and larger than that of light-flavor mesons which is in a qualitative agreement with hydrodynamic model predictions with a tilted QGP bulk.

Název v anglickém jazyce

Open-Charm Hadron Measurements in Au+Au Collisions at root s(NN) = 200 GeV by the STAR Experiment

Popis výsledku anglicky

Study of the open-charm hadron production in heavy-ion collisions is crucial for understanding the properties of the Quark-Gluon Plasma. In these papers, we report on a selection of recent STAR measurements of open-charm hadrons in Au+Au collisions at . root s(NN) = 200 GeV, using the Heavy-Flavor Tracker. In particular, the nuclear modification factors of D-0 and D-+/- mesons, elliptic and directed flow of D-0 mesons, D-s/D-0 and Lambda(c)/D(0)yield ratios are discussed. The observed suppression of D(0 )and D-+/- mesons suggests strong interactions of the charm quarks with the QGP. The measured elliptic flow of D-0 mesons is large and follows the NCQ scaling, suggesting that charm quarks may be close to thermal equilibrium with the QGP medium. Both D-s/D-0 and Lambda(c) /D(0)yield ratios are found to be enhanced in Au+Au collisions. The enhancement can be explained by models incorporating coalescence hadronization of charm quarks. In addition, the directed flow of the D-0 mesons is measured to be negative and larger than that of light-flavor mesons which is in a qualitative agreement with hydrodynamic model predictions with a tilted QGP bulk.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

EF16_013/0001569: Brookhavenská národní laboratoř - účast České republiky

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

UNIVERSE

ISSN

2218-1997

e-ISSN

—

Svazek periodika

5

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

196

Kód UT WoS článku

000489177000007

EID výsledku v databázi Scopus

2-s2.0-85073114022