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Tumasyan, A.;
Adam, W.;
Andrejkovic, J. W.;
Bergauer, T.;
Chatterjee, S.;
Damanakis, K.;
Dragicevic, M.;
Escalante Del Valle, A.;
Hussain, P. S.;
Jeitler, M.;
Krammer, N.;
Lechner, L.;
Liko, D.;
Mikulec, I.;
Paulitsch, P.;
Pitters, F. M.;
Schieck, J.;
Schöfbeck, R.;
Schwarz, D.;
Sonawane, M.;
Templ, S.;
Waltenberger, W.;
Wulz, C.-E.;
Darwish, M. R.;
[...]
Higher-order moments of the elliptic flow distribution in PbPb collisions at $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV
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- Medientyp: E-Artikel
- Titel: Higher-order moments of the elliptic flow distribution in PbPb collisions at $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV
- Beteiligte: Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Lechner, L.; Liko, D.; Mikulec, I.; Paulitsch, P.; Pitters, F. M.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; Sonawane, M.; Templ, S.; Waltenberger, W.; Wulz, C.-E.; Darwish, M. R.; [...]
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Erschienen:
Springer Science and Business Media LLC, 2024
- Erschienen in: Journal of High Energy Physics, 2024 (2024) 2
- Sprache: Englisch
- DOI: 10.1007/jhep02(2024)106
- ISSN: 1029-8479
- Entstehung:
- Anmerkungen:
- Beschreibung: Abstract The hydrodynamic flow-like behavior of charged hadrons in high-energy lead-lead collisions is studied through multiparticle correlations. The elliptic anisotropy values based on different orders of multiparticle cumulants, v2{2k}, are measured up to the tenth order (k = 5) as functions of the collision centrality at a nucleon-nucleon center-of-mass energy of $$ \sqrt{s_{\textrm{NN}}} $$ s NN = 5.02 TeV. The data were recorded by the CMS experiment at the LHC and correspond to an integrated luminosity of 0.607 nb−1. A hierarchy is observed between the coefficients, with v2{2} > v2{4} ≳ v2{6} ≳ v2{8} ≳ v2{10}. Based on these results, centrality-dependent moments for the fluctuation-driven event-by-event v2 distribution are determined, including the skewness, kurtosis and, for the first time, superskewness. Assuming a hydrodynamic expansion of the produced medium, these moments directly probe the initial-state geometry in high-energy nucleus-nucleus collisions.
- Zugangsstatus: Freier Zugang