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https://hdl.handle.net/1822/69313
Título: | Measurement of flow harmonics correlations with mean transverse momentum in lead–lead and proton–lead collisions at sNN−−−√=5.02 TeV with the ATLAS detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
Data: | 2019 |
Editora: | Springer |
Revista: | European Physical Journal C |
Citação: | ATLAS Collaboration., Aad, G., Abbott, B. et al. Measurement of flow harmonics correlations with mean transverse momentum in lead–lead and proton–lead collisions at sNN−−−√=5.02 TeV with the ATLAS detector. Eur. Phys. J. C 79, 985 (2019). https://doi.org/10.1140/epjc/s10052-019-7489-6 |
Resumo(s): | 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 22 μb−1 and 28 nb−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. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/69313 |
DOI: | 10.1140/epjc/s10052-019-7489-6 |
ISSN: | 1434-6044 |
e-ISSN: | 1434-6052 |
Versão da editora: | https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-7489-6 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Aad2019_Article_MeasurementOfFlowHarmonicsCorr.pdf | 1,65 MB | Adobe PDF | Ver/Abrir |