Symmetry plane correlations in Pb–Pb collisions at √sNN = 2.76 TeV
Publiceringsår
2023
Upphovspersoner
The ALICE collaboration; Acharya, S.; Adamová, D.; Huhta, Laura Maria; Kim, D. J.; Melikyan, Yury; Molander, Mikael Andreas; Onnerstad, A.; Parkkila, J. E.; Rytkönen, Heidi Maria; Räsänen, Sami; Saarimäki, Oskari Antti Matti; Slupecki, M.; Trzaska, W. H.; Virta, Maxim Mikael Olavi
Visa merAbstrakt
A newly developed observable for correlations between symmetry planes, which characterize the direction of the anisotropic emission of produced particles, is measured in Pb–Pb collisions at √sNN = 2.76 TeV with ALICE. This so-called Gaussian Estimator allows for the first time the study of these quantities without the influence of correlations between different flow amplitudes. The centrality dependence of various correlations between two, three and four symmetry planes is presented. The ordering of magnitude between these symmetry plane correlations is discussed and the results of the Gaussian Estimator are compared with measurements of previously used estimators. The results utilizing the new estimator lead to significantly smaller correlations than reported by studies using the Scalar Product method. Furthermore, the obtained symmetry plane correlations are compared to state-of-the-art hydrodynamic model calculations for the evolution of heavy-ion collisions. While the model predictions provide a qualitative description of the data, quantitative agreement is not always observed, particularly for correlators with significant non-linear response of the medium to initial state anisotropies of the collision system. As these results provide unique and independent information, their usage in future Bayesian analysis can further constrain our knowledge on the properties of the QCD matter produced in ultrarelativistic heavy-ion collisions.
Visa merOrganisationer och upphovspersoner
Helsingfors universitet
Kim D. J.
Rytkönen Heidi Maria
Parkkila J. E.
Huhta Laura Maria
Slupecki M.
Virta Maxim Mikael Olavi
Molander Mikael Andreas
Saarimäki Oskari Antti Matti
Räsänen Sami
Trzaska W. H.
Melikyan Yury
Jyväskylä universitet
Önnerstad Anna
Publikationstyp
Publikationsform
Artikel
Moderpublikationens typ
Tidning
Artikelstyp
En originalartikel
Målgrupp
VetenskapligKollegialt utvärderad
Kollegialt utvärderadUKM:s publikationstyp
A1 Originalartikel i en vetenskaplig tidskriftPublikationskanalens uppgifter
Journal
Moderpublikationens namn
Förläggare
Volym
83
Artikelnummer
576
ISSN
Publikationsforum
Publikationsforumsnivå
2
Öppen tillgång
Öppen tillgänglighet i förläggarens tjänst
Ja
Öppen tillgång till publikationskanalen
Helt öppen publikationskanal
Parallellsparad
Ja
Övriga uppgifter
Vetenskapsområden
Fysik
Nyckelord
[object Object],[object Object],[object Object],[object Object]
Publiceringsland
Tyskland
Förlagets internationalitet
Internationell
Språk
engelska
Internationell sampublikation
Ja
Sampublikation med ett företag
Nej
DOI
10.1140/epjc/s10052-023-11658-w
Publikationen ingår i undervisnings- och kulturministeriets datainsamling
Ja