Investigations of Anisotropic Flow Using Multiparticle Azimuthal Correlations in pp, p-Pb, Xe-Xe, and Pb-Pb Collisions at the LHC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00509913" target="_blank" >RIV/61389005:_____/19:00509913 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/19:00509913 RIV/68407700:21340/19:00337979

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevLett.123.142301" target="_blank" >https://doi.org/10.1103/PhysRevLett.123.142301</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.123.142301" target="_blank" >10.1103/PhysRevLett.123.142301</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigations of Anisotropic Flow Using Multiparticle Azimuthal Correlations in pp, p-Pb, Xe-Xe, and Pb-Pb Collisions at the LHC

Popis výsledku v původním jazyce

Measurements of anisotropic flow coefficients (v(n)) and their cross-correlations using two- and multiparticle cumulant methods are reported in collisions of pp at root S = 13 TeV, p-Pb at a center-of- mass energy per nucleon pair root S-NN = 5.02 TeV, Xe-Xe at = 5.44 TeV, and Pb-Pb at root S-NN = 5.02 TeV recorded with the ALICE detector. The multiplicity dependence of v(n) is studied in a very wide range from 20 to 3000 particles produced in the midrapidity region vertical bar eta vertical bar < 0.8 for the transverse momentum range 0.2 < p(T) < 3.0 GeV/c. An ordering of the coefficients v(2) > v(3) > v(4) is found in pp and p-Pb collisions, similar to that seen in large collision systems, while a weak v(2) multiplicity dependence is observed relative to nucleus-nucleus collisions in the same multiplicity range. Using a novel subevent method, v(2) measured with four-particle cumulants is found to be compatible with that from six-particle cumulants in pp and p-Pb collisions. The magnitude of the correlation between v(n)(2) and v(m)(2) evaluated with the symmetric cumulants SC(m, n) is observed to be positive at all multiplicities for v(2) and v4, while for v(2) and v(3) it is negative and changes sign for multiplicities below 100, which may indicate a different v(n) fluctuation pattern in this multiplicity range. The observed long-range multiparticle azimuthal correlations in high multiplicity pp and p-Pb collisions can neither be described by PYTHIA 8 nor by impact-parameterGlasma, muslc, and ultrarelativistic quantum molecular dynamics model calculations, and hence, provide new insights into the understanding of collective effects in small collision systems.

Název v anglickém jazyce

Investigations of Anisotropic Flow Using Multiparticle Azimuthal Correlations in pp, p-Pb, Xe-Xe, and Pb-Pb Collisions at the LHC

Popis výsledku anglicky

Measurements of anisotropic flow coefficients (v(n)) and their cross-correlations using two- and multiparticle cumulant methods are reported in collisions of pp at root S = 13 TeV, p-Pb at a center-of- mass energy per nucleon pair root S-NN = 5.02 TeV, Xe-Xe at = 5.44 TeV, and Pb-Pb at root S-NN = 5.02 TeV recorded with the ALICE detector. The multiplicity dependence of v(n) is studied in a very wide range from 20 to 3000 particles produced in the midrapidity region vertical bar eta vertical bar < 0.8 for the transverse momentum range 0.2 < p(T) < 3.0 GeV/c. An ordering of the coefficients v(2) > v(3) > v(4) is found in pp and p-Pb collisions, similar to that seen in large collision systems, while a weak v(2) multiplicity dependence is observed relative to nucleus-nucleus collisions in the same multiplicity range. Using a novel subevent method, v(2) measured with four-particle cumulants is found to be compatible with that from six-particle cumulants in pp and p-Pb collisions. The magnitude of the correlation between v(n)(2) and v(m)(2) evaluated with the symmetric cumulants SC(m, n) is observed to be positive at all multiplicities for v(2) and v4, while for v(2) and v(3) it is negative and changes sign for multiplicities below 100, which may indicate a different v(n) fluctuation pattern in this multiplicity range. The observed long-range multiparticle azimuthal correlations in high multiplicity pp and p-Pb collisions can neither be described by PYTHIA 8 nor by impact-parameterGlasma, muslc, and ultrarelativistic quantum molecular dynamics model calculations, and hence, provide new insights into the understanding of collective effects in small collision systems.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

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

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

Physical Review Letters

ISSN

0031-9007

e-ISSN

—

Svazek periodika

123

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

142301

Kód UT WoS článku

000488515100003

EID výsledku v databázi Scopus

2-s2.0-85074697775