Freeze-out dynamics via charged kaon femtoscopy in root sNN=200 GeV central Au plus Au collisions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F13%3A00208777" target="_blank" >RIV/68407700:21340/13:00208777 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/13:00397920

Výsledek na webu

<a href="http://arxiv.org/pdf/1302.3168.pdf" target="_blank" >http://arxiv.org/pdf/1302.3168.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.88.034906" target="_blank" >10.1103/PhysRevC.88.034906</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Freeze-out dynamics via charged kaon femtoscopy in root sNN=200 GeV central Au plus Au collisions

Popis výsledku v původním jazyce

We present measurements of three-dimensional correlation functions of like-sign, low-transverse-momentum kaon pairs from root sNN = 200 GeV Au + Au collisions. A Cartesian surface-spherical harmonic decomposition technique was used to extract the kaon source function. The latter was found to have a three-dimensional Gaussian shape and can be adequately reproduced by Therminator event-generator simulations with resonance contributions taken into account. Compared to the pion one, the kaon source functionis generally narrower and does not have the long tail along the pair transverse momentum direction. The kaon Gaussian radii display a monotonic decrease with increasing transverse mass m(T) over the interval of 0.55 <= mT <= 1.15 GeV/c(2). While the kaon radii are adequately described by the m(T) -scaling in the outward and sideward directions, in the longitudinal direction the lowest m(T) value exceeds the expectations from a pure hydrodynamical model prediction.

Název v anglickém jazyce

Freeze-out dynamics via charged kaon femtoscopy in root sNN=200 GeV central Au plus Au collisions

Popis výsledku anglicky

We present measurements of three-dimensional correlation functions of like-sign, low-transverse-momentum kaon pairs from root sNN = 200 GeV Au + Au collisions. A Cartesian surface-spherical harmonic decomposition technique was used to extract the kaon source function. The latter was found to have a three-dimensional Gaussian shape and can be adequately reproduced by Therminator event-generator simulations with resonance contributions taken into account. Compared to the pion one, the kaon source functionis generally narrower and does not have the long tail along the pair transverse momentum direction. The kaon Gaussian radii display a monotonic decrease with increasing transverse mass m(T) over the interval of 0.55 <= mT <= 1.15 GeV/c(2). While the kaon radii are adequately described by the m(T) -scaling in the outward and sideward directions, in the longitudinal direction the lowest m(T) value exceeds the expectations from a pure hydrodynamical model prediction.

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/GA13-20841S" target="_blank" >GA13-20841S: Studium jaderné hmoty v ultra-relativistických jaderných srážkách na urychlovači RHIC</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Physical Review C

ISSN

0556-2813

e-ISSN

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Svazek periodika

88

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000324634100004

EID výsledku v databázi Scopus

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