Anisotropic flow and flow fluctuations of identified hadrons in Pb-Pb collisions at root(NN)-N-s=5.02 TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00368613" target="_blank" >RIV/68407700:21340/23:00368613 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1007/JHEP05(2023)243" target="_blank" >https://doi.org/10.1007/JHEP05(2023)243</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP05(2023)243" target="_blank" >10.1007/JHEP05(2023)243</a>

Result language

angličtina

Original language name

Anisotropic flow and flow fluctuations of identified hadrons in Pb-Pb collisions at root(NN)-N-s=5.02 TeV

Original language description

The first measurements of elliptic flow of pi(+/-), K-+/-, p+(p) over bar, K-S(0), Lambda + (Lambda) over bar, phi, Xi(-)+ Xi(+), and Omega(-) + (Omega) over bar (+) using multiparticle cumulants in Pb-Pb collisions at root(NN)-N-s = 5.02TeV are presented. Results obtained with two- ( v2{2}) and four-particle cumulants ( v(2){4}) are shown as a function of transverse momentum, pT, for various collision centrality intervals. Combining the data for both v(2){2} and v(2){4} also allows us to report the first measurements of the mean elliptic flow, elliptic flow fluctuations, and relative elliptic flow fluctuations for various hadron species. These observables probe the event-by-event eccentricity fluctuations in the initial state and the contributions from the dynamic evolution of the expanding quark-gluon plasma. The characteristic features observed in previous pT-differential anisotropic flow measurements for identified hadrons with two-particle correlations, namely the mass ordering at low pT and the approximate scaling with the number of constituent quarks at intermediate pT, are similarly present in the four-particle correlations and the combinations of v(2){2} and v(2){4}. In addition, a particle species dependence of flow fluctuations is observed that could indicate a significant contribution from final state hadronic interactions. The comparison between experimental measurements and CoLBT model calculations, which combine the various physics processes of hydrodynamics, quark coalescence, and jet fragmentation, illustrates their importance over a wide pT range.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Volume of the periodical

2023

Issue of the periodical within the volume

5

Country of publishing house

IT - ITALY

Number of pages

35

Pages from-to

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UT code for WoS article

001022886700001

EID of the result in the Scopus database

2-s2.0-85160948065