Higher-order moments of the elliptic flow distribution in lead-lead collisions at √sNN=5.02 TeV
Конференцијски прилог (Објављена верзија)
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The collective anisotropic hydrodynamic behavior of charge hadrons is studied using the multiparticle correlation method. The elliptic anisotropy harmonic from different orders of multiparticle cumulants, v2{2k} , are measured up to the tenth order (k=5 ) as functions of the collision centrality in lead-lead collisions at an energy of sNN−−−√= 5.02 TeV. The data were obtained by the CMS experiment at the LHC, with an integrated luminosity of 0.58 nb−1 . A fine splitting v2{2} > v2{4}≳v2{6}≳v2{8}≳v2{10} is observed. The subtle differences in the higher-order cumulants allow for a precise determination of the underlying hydrodynamics. Based on these results, centrality-dependent moments for the fluctuation-driven event-by-event v2 distribution are determined, including the skewness, the kurtosis and, for the first time, the superskewness. Assuming a hydrodynamic expansion of the produced medium, these moments probe the initial-state geometry in high-energy nucleus-nucleus collisions.
Извор:
Proceedings of Science, 2023, 427, 193246-Финансирање / пројекти:
- Ministry of Education Science and Technological Development, Republic of Serbia
Напомена:
- BPU11 : 11th International Conference of the Balkan Physical Union
- S05-HEP High Energy Physics (Particles and Fields)
- Jovan Milosevic on behalf of the CMS Collaboration
Колекције
Институција/група
VinčaTY - CONF AU - Milošević, Jovan PY - 2023 UR - https://vinar.vin.bg.ac.rs/handle/123456789/11939 AB - The collective anisotropic hydrodynamic behavior of charge hadrons is studied using the multiparticle correlation method. The elliptic anisotropy harmonic from different orders of multiparticle cumulants, v2{2k} , are measured up to the tenth order (k=5 ) as functions of the collision centrality in lead-lead collisions at an energy of sNN−−−√= 5.02 TeV. The data were obtained by the CMS experiment at the LHC, with an integrated luminosity of 0.58 nb−1 . A fine splitting v2{2} > v2{4}≳v2{6}≳v2{8}≳v2{10} is observed. The subtle differences in the higher-order cumulants allow for a precise determination of the underlying hydrodynamics. Based on these results, centrality-dependent moments for the fluctuation-driven event-by-event v2 distribution are determined, including the skewness, the kurtosis and, for the first time, the superskewness. Assuming a hydrodynamic expansion of the produced medium, these moments probe the initial-state geometry in high-energy nucleus-nucleus collisions. C3 - Proceedings of Science T1 - Higher-order moments of the elliptic flow distribution in lead-lead collisions at √sNN=5.02 TeV VL - 427 SP - 193246 DO - 10.22323/1.427.0082 ER -
@conference{ author = "Milošević, Jovan", year = "2023", abstract = "The collective anisotropic hydrodynamic behavior of charge hadrons is studied using the multiparticle correlation method. The elliptic anisotropy harmonic from different orders of multiparticle cumulants, v2{2k} , are measured up to the tenth order (k=5 ) as functions of the collision centrality in lead-lead collisions at an energy of sNN−−−√= 5.02 TeV. The data were obtained by the CMS experiment at the LHC, with an integrated luminosity of 0.58 nb−1 . A fine splitting v2{2} > v2{4}≳v2{6}≳v2{8}≳v2{10} is observed. The subtle differences in the higher-order cumulants allow for a precise determination of the underlying hydrodynamics. Based on these results, centrality-dependent moments for the fluctuation-driven event-by-event v2 distribution are determined, including the skewness, the kurtosis and, for the first time, the superskewness. Assuming a hydrodynamic expansion of the produced medium, these moments probe the initial-state geometry in high-energy nucleus-nucleus collisions.", journal = "Proceedings of Science", title = "Higher-order moments of the elliptic flow distribution in lead-lead collisions at √sNN=5.02 TeV", volume = "427", pages = "193246", doi = "10.22323/1.427.0082" }
Milošević, J.. (2023). Higher-order moments of the elliptic flow distribution in lead-lead collisions at √sNN=5.02 TeV. in Proceedings of Science, 427, 193246. https://doi.org/10.22323/1.427.0082
Milošević J. Higher-order moments of the elliptic flow distribution in lead-lead collisions at √sNN=5.02 TeV. in Proceedings of Science. 2023;427:193246. doi:10.22323/1.427.0082 .
Milošević, Jovan, "Higher-order moments of the elliptic flow distribution in lead-lead collisions at √sNN=5.02 TeV" in Proceedings of Science, 427 (2023):193246, https://doi.org/10.22323/1.427.0082 . .