Measurement of longitudinal flow decorrelations in Pb+Pb collisions at √sNN =2.76 and 5.02 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00500352" target="_blank" >RIV/68378271:_____/18:00500352 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1140/epjc/s10052-018-5605-7" target="_blank" >http://dx.doi.org/10.1140/epjc/s10052-018-5605-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-018-5605-7" target="_blank" >10.1140/epjc/s10052-018-5605-7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of longitudinal flow decorrelations in Pb+Pb collisions at √sNN =2.76 and 5.02 TeV with the ATLAS detector

Popis výsledku v původním jazyce

Measurements of longitudinal flow correlations are presented for charged particles in the pseudorapidity range |η|<2.4 using 7 and 470 upmub−1 of Pb+Pb collisions at sNN−−−√=2.76 and 5.02 TeV, respectively, recorded by the ATLAS detector at the LHC. It is found that the correlation between the harmonic flow coefficients vn measured in two separated η intervals does not factorise into the product of single-particle coefficients, and this breaking of factorisation, or flow decorrelation, increases linearly with the η separation between the intervals. The flow decorrelation is stronger at 2.76 TeV than at 5.02 TeV. Higher-order moments of the correlations are also measured, and the corresponding linear coefficients for the kth -moment of the vn are found to be proportional to k for v3 , but not for v2 . The decorrelation effect is separated into contributions from the magnitude of vn and the event-plane orientation, each as a function of η .n

Název v anglickém jazyce

Measurement of longitudinal flow decorrelations in Pb+Pb collisions at √sNN =2.76 and 5.02 TeV with the ATLAS detector

Popis výsledku anglicky

Measurements of longitudinal flow correlations are presented for charged particles in the pseudorapidity range |η|<2.4 using 7 and 470 upmub−1 of Pb+Pb collisions at sNN−−−√=2.76 and 5.02 TeV, respectively, recorded by the ATLAS detector at the LHC. It is found that the correlation between the harmonic flow coefficients vn measured in two separated η intervals does not factorise into the product of single-particle coefficients, and this breaking of factorisation, or flow decorrelation, increases linearly with the η separation between the intervals. The flow decorrelation is stronger at 2.76 TeV than at 5.02 TeV. Higher-order moments of the correlations are also measured, and the corresponding linear coefficients for the kth -moment of the vn are found to be proportional to k for v3 , but not for v2 . The decorrelation effect is separated into contributions from the magnitude of vn and the event-plane orientation, each as a function of η .n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LTT17018" target="_blank" >LTT17018: Získávání nových poznatků o mikrosvětě v infrastruktuře CERN</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

—

Svazek periodika

78

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

37

Strana od-do

—

Kód UT WoS článku

000425395800005

EID výsledku v databázi Scopus

2-s2.0-85042405179