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Sub-leading flow modes in PbPb collisions at √sNN = 2.76 TeV from the HYDJET++ model
dc.creator | Ćirković, Predrag | |
dc.creator | Devetak, Damir | |
dc.creator | Đorđević, Miloš | |
dc.creator | Milošević, Jovan | |
dc.creator | Stojanović, Milan | |
dc.date.accessioned | 2018-03-01T17:44:15Z | |
dc.date.available | 2018-03-01T17:44:15Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 1674-1137 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/1652 | |
dc.description.abstract | Recent LHC results on the appearance of sub-leading flow modes in PbPb collisions at 2.76 TeV, related to initial-state fluctuations, are analyzed and interpreted within the HYDJET++ model. Using the newly introduced Principal Component Analysis (PCA) method applied to two-particle azimuthal correlations extracted from the model calculations, the leading and sub-leading flow modes are studied as a function of the transverse momentum (p(T)) over a wide centrality range. The leading modes of the elliptic (v(2)((1))) and triangular (v(3)((1))) flow calculated with the HYDJET++ model reproduce rather well the v(2){2} and v(3){2} coefficients measured experimentally using the two-particle correlations. Within the p(T) LT = 3 GeV/c range, where hydrodynamics dominates, the sub-leading flow effects are greatest at the highest p(T) of around 3 GeV/c. The sub-leading elliptic flow mode (v(2)((2))), which corresponds to the n = 2 harmonic, has a small non-zero value and slowly increases from central to peripheral collisions, while the sub-leading triangular flow mode (v(3)((2))), which corresponds to the n = 3 harmonic, is even smaller and does not depend on centrality. For n = 2, the relative magnitude of the effect measured with respect to the leading flow mode shows a shallow minimum for semi-central collisions and increases for very central and for peripheral collisions. For the n = 3 case, there is no centrality dependence. The sub-leading flow mode results obtained from the HYDJET++ model are in rather good agreement with the experimental measurements of the CMS Collaboration. | en |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/171019/RS// | |
dc.rights | restrictedAccess | en |
dc.source | Chinese Physics C | en |
dc.subject | hydrodynamics flow | en |
dc.subject | initial-state fluctuations | en |
dc.subject | principal component analysis | en |
dc.subject | HYDJET plus | en |
dc.title | Sub-leading flow modes in PbPb collisions at √sNN = 2.76 TeV from the HYDJET++ model | en |
dc.type | article | en |
dc.rights.license | ARR | |
dcterms.abstract | Стојановиц, М.; Ћирковић Предраг; Деветак Дамир; Ђорђевић Милош; Милошевић Јован; | |
dc.citation.volume | 41 | |
dc.citation.issue | 7 | |
dc.identifier.wos | 000406156700005 | |
dc.identifier.doi | 10.1088/1674-1137/41/7/074001 | |
dc.citation.other | Article Number: 074001 | |
dc.citation.rank | M22 | |
dc.type.version | publishedVersion |