Dvoučásticové korelace v příčné hybnosti a disipace hybnosti ve srážkách Au+Au při (sNN) = 130 GeV]

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F07%3A00096331" target="_blank" >RIV/61389005:_____/07:00096331 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Two-particle correlations on transverse momentum and momentum dissipation in Au-Au collisions at (sNN) = 130 GeV

Popis výsledku v původním jazyce

Measurements of two-particle correlations on transverse momentum pt for Au?Au collisions at (sNN)=130 GeV are presented. Significant large-momentum-scale correlations are observed for charged primary hadrons with 0.15 pt 2 GeV/c and pseudorapidity |?| 1.3. Such correlations were not observed in a similar study at lower energy and are not predicted by theoretical collision models. Their direct relation to mean-pt fluctuations measured in the same angular acceptance is demonstrated. Positive correlationsare observed for pairs of particles which have large pt values while negative correlations occur for pairs in which one particle has large pt and the other has much lower pt. The correlation amplitudes per final state particle increase with collision centrality. The observed correlations are consistent with a scenario in which the transverse momentum of hadrons associated with initial-stage semi-hard parton scattering is dissipated by the medium to lower pt.

Název v anglickém jazyce

Two-particle correlations on transverse momentum and momentum dissipation in Au-Au collisions at (sNN) = 130 GeV

Popis výsledku anglicky

Measurements of two-particle correlations on transverse momentum pt for Au?Au collisions at (sNN)=130 GeV are presented. Significant large-momentum-scale correlations are observed for charged primary hadrons with 0.15 pt 2 GeV/c and pseudorapidity |?| 1.3. Such correlations were not observed in a similar study at lower energy and are not predicted by theoretical collision models. Their direct relation to mean-pt fluctuations measured in the same angular acceptance is demonstrated. Positive correlationsare observed for pairs of particles which have large pt values while negative correlations occur for pairs in which one particle has large pt and the other has much lower pt. The correlation amplitudes per final state particle increase with collision centrality. The observed correlations are consistent with a scenario in which the transverse momentum of hadrons associated with initial-stage semi-hard parton scattering is dissipated by the medium to lower pt.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

<a href="/cs/project/GA202%2F04%2F0793" target="_blank" >GA202/04/0793: Studium jádro-jaderných a proton-protonových srážek na RHIC</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics G-Nuclear and Particle Physics

ISSN

0954-3899

e-ISSN

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Svazek periodika

34

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

799-816

Kód UT WoS článku

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EID výsledku v databázi Scopus

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