Szczegóły publikacji

Opis bibliograficzny

Measurement of flow harmonics correlations with mean transverse momentum in lead-lead and proton-lead collisions at $\sqrt{s_{NN}}$=5.02 TeV with the ATLAS detector / G. Aad, [et al.], L. ADAMCZYK, [et al.], T. BOŁD, [et al.], K. BURKA, [et al.], W. DĄBROWSKI, [et al.], G. P. GACH, [et al.], I. GRABOWSKA-BOŁD, [et al.], K. W. JANAS, [et al.], P. A. JANUS, [et al.], S. KOPERNY, [et al.], J. A. KREMER, [et al.], B. MINDUR, [et al.], A. OGRODNIK, [et al.], M. PRZYBYCIEŃ, [et al.] // The European Physical Journal. C, Particles and Fields ; ISSN 1434-6044. — 2019 — vol. 79 iss. 12 art. no. 985, s. 1–29. — Bibliogr. s. 15–16, Abstr. — Publikacja dostępna online od: 2019-12-03

Autorzy (2938)

Dane bibliometryczne

ID BaDAP127083
Data dodania do BaDAP2020-01-29
Tekst źródłowyURL
DOI10.1140/epjc/s10052-019-7489-6
Rok publikacji2019
Typ publikacjiartykuł w czasopiśmie
Otwarty dostęptak
Creative Commons
Czasopismo/seriaEuropean Physical Journal, C

Abstract

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.

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