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Article: 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
Title | 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 |
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Authors | |
Keywords | Collisions Ionic collisions Flow harmonics |
Issue Date | 2019 |
Publisher | Springer Verlag (Germany): SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org |
Citation | The European Physical Journal C: Particles and Fields, 2019, v. 79 n. 12, p. 985:1-985:29 How to Cite? |
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. |
Persistent Identifier | http://hdl.handle.net/10722/280376 |
ISSN | 2023 Impact Factor: 4.2 2023 SCImago Journal Rankings: 1.451 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | LO, CY | - |
dc.contributor.author | Paredes Hernandez, D | - |
dc.contributor.author | Salvucci, A | - |
dc.contributor.author | Tu, Y | - |
dc.contributor.author | ATLAS Collaboration | - |
dc.contributor.author | Pizzimento, L | - |
dc.date.accessioned | 2020-02-07T07:40:10Z | - |
dc.date.available | 2020-02-07T07:40:10Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | The European Physical Journal C: Particles and Fields, 2019, v. 79 n. 12, p. 985:1-985:29 | - |
dc.identifier.issn | 1434-6044 | - |
dc.identifier.uri | http://hdl.handle.net/10722/280376 | - |
dc.description.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. | - |
dc.language | eng | - |
dc.publisher | Springer Verlag (Germany): SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org | - |
dc.relation.ispartof | The European Physical Journal C: Particles and Fields | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Collisions | - |
dc.subject | Ionic collisions | - |
dc.subject | Flow harmonics | - |
dc.title | 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 | - |
dc.type | Article | - |
dc.identifier.email | Paredes Hernandez, D: dparedes@hku.hk | - |
dc.identifier.email | Tu, Y: yanjuntu@hku.hk | - |
dc.identifier.authority | Tu, Y=rp01971 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1140/epjc/s10052-019-7489-6 | - |
dc.identifier.scopus | eid_2-s2.0-85076102833 | - |
dc.identifier.hkuros | 309051 | - |
dc.identifier.volume | 79 | - |
dc.identifier.issue | 12 | - |
dc.identifier.spage | 985:1 | - |
dc.identifier.epage | 985:29 | - |
dc.identifier.isi | WOS:000505552500002 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 1434-6044 | - |