Pseudorapidity dependence of the anisotropic flow of charged particles in Pb–Pb collisions at root s-NN=2.76 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00472818" target="_blank" >RIV/68378271:_____/16:00472818 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/16:00472818 RIV/68407700:21340/16:00309824

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.physletb.2016.07.017" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2016.07.017</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2016.07.017" target="_blank" >10.1016/j.physletb.2016.07.017</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pseudorapidity dependence of the anisotropic flow of charged particles in Pb–Pb collisions at root s-NN=2.76 TeV

Popis výsledku v původním jazyce

We present measurements of the elliptic (v2), triangular (v3) and quadrangular (v4) anisotropic azimuthal flow over a wide range of pseudorapidities (3.5<eta<5). The measurements are performed with Pb–Pb collisions at root s-NN=2.76 TeV using the ALICE detector at the Large Hadron Collider (LHC). The flow harmonics are obtained using two- and four-particle correlations from nine different centrality intervals covering central to peripheral collisions. We find that the shape of vn(eta) is largely independent of centrality for the flow harmonics n=2–4, however the higher harmonics fall off more steeply with increasing eta. We assess the validity of extended longitudinal scaling of v2 by comparing to lower energy measurements, and find that the higher harmonic flow coefficients are proportional to the charged particle densities at larger pseudorapidities. Finally, we compare our measurements to both hydrodynamical and transport models, and find they both have challenges when it comes to describing our data.

Název v anglickém jazyce

Pseudorapidity dependence of the anisotropic flow of charged particles in Pb–Pb collisions at root s-NN=2.76 TeV

Popis výsledku anglicky

We present measurements of the elliptic (v2), triangular (v3) and quadrangular (v4) anisotropic azimuthal flow over a wide range of pseudorapidities (3.5<eta<5). The measurements are performed with Pb–Pb collisions at root s-NN=2.76 TeV using the ALICE detector at the Large Hadron Collider (LHC). The flow harmonics are obtained using two- and four-particle correlations from nine different centrality intervals covering central to peripheral collisions. We find that the shape of vn(eta) is largely independent of centrality for the flow harmonics n=2–4, however the higher harmonics fall off more steeply with increasing eta. We assess the validity of extended longitudinal scaling of v2 by comparing to lower energy measurements, and find that the higher harmonic flow coefficients are proportional to the charged particle densities at larger pseudorapidities. Finally, we compare our measurements to both hydrodynamical and transport models, and find they both have challenges when it comes to describing our data.

Druh

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

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

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

—

Svazek periodika

762

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

376-388

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-84991716472