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Заглавие документа: | Measurement of flow harmonics correlations with mean transverse momentum in lead–lead and proton–lead collisions at √sNN=5.02TeV with the ATLAS detector |
Авторы: | Hrynevich, A. ATLAS Collaboration |
Тема: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
Дата публикации: | 2019 |
Издатель: | Springer |
Библиографическое описание источника: | Eur Phys J C 2019;79(12). |
Аннотация: | To assess the properties of the quark–gluon plasma formed in ultrarelativistic ion collisions, the ATLAS experiment at the LHC measures a correlation between the mean transverse momentum and the flow harmonics. The analysis uses data samples of lead–lead and proton–lead collisions obtained at the centre-of-mass energy per nucleon pair of 5.02 TeV, corresponding to total integrated luminosities of 22μb-1 and 28nb-1, respectively. The measurement is performed using a modified Pearson correlation coefficient with the charged-particle tracks on an event-by-event basis. The modified Pearson correlation coefficients for the 2nd-, 3rd-, and 4th-order flow harmonics are measured in the lead–lead collisions as a function of event centrality quantified as the number of charged particles or the number of nucleons participating in the collision. The measurements are performed for several intervals of the charged-particle transverse momentum. The correlation coefficients for all studied harmonics exhibit a strong centrality evolution, which only weakly depends on the charged-particle momentum range. In the proton–lead collisions, the modified Pearson correlation coefficient measured for the 2nd-order flow harmonics shows only weak centrality dependence. The lead-lead data is qualitatively described by the predictions based on the hydrodynamical model. |
URI документа: | https://elib.bsu.by/handle/123456789/261119 |
DOI документа: | 10.1140/epjc/s10052-019-7489-6 |
Scopus идентификатор документа: | 85076102833 |
Финансовая поддержка: | ST/L006162/1,ST/N000307/1,ST/N000331/1 |
Располагается в коллекциях: | Статьи НИУ «Институт ядерных проблем» |
Полный текст документа:
Файл | Описание | Размер | Формат | |
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Aad2019_Article_MeasurementOfFlowHarmonicsCorr.pdf | 1,65 MB | Adobe PDF | Открыть |
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