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Article: Longitudinal Flow Decorrelations in Xe + Xe Collisions at √sNN=5.44 TeV with the ATLAS Detector

TitleLongitudinal Flow Decorrelations in Xe + Xe Collisions at √sNN=5.44 TeV with the ATLAS Detector
Authors
Issue Date2021
PublisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prl/
Citation
Physical Review Letters, 2021, v. 126 n. 12, p. article no. 122301 How to Cite?
AbstractThe first measurement of longitudinal decorrelations of harmonic flow amplitudes v_{n} for n=2-4 in Xe+Xe collisions at sqrt[s_{NN}]=5.44 TeV is obtained using 3 μb^{-1} of data with the ATLAS detector at the LHC. The decorrelation signal for v_{3} and v_{4} is found to be nearly independent of collision centrality and transverse momentum (p_{T}) requirements on final-state particles, but for v_{2} a strong centrality and p_{T} dependence is seen. When compared with the results from Pb+Pb collisions at sqrt[s_{NN}]=5.02 TeV, the longitudinal decorrelation signal in midcentral Xe+Xe collisions is found to be larger for v_{2}, but smaller for v_{3}. Current hydrodynamic models reproduce the ratios of the v_{n} measured in Xe+Xe collisions to those in Pb+Pb collisions but fail to describe the magnitudes and trends of the ratios of longitudinal flow decorrelations between Xe+Xe and Pb+Pb. The results on the system-size dependence provide new insights and an important lever arm to separate effects of the longitudinal structure of the initial state from other early and late time effects in heavy-ion collisions.
DescriptionHybrid open access
Persistent Identifierhttp://hdl.handle.net/10722/300326
ISSN
2020 Impact Factor: 9.161
2020 SCImago Journal Rankings: 3.688
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLo, CY-
dc.contributor.authorParedes Hernandez, D-
dc.contributor.authorSalvucci, A-
dc.contributor.authorTu, Y-
dc.contributor.authorATLAS Collaboration-
dc.date.accessioned2021-06-04T08:41:21Z-
dc.date.available2021-06-04T08:41:21Z-
dc.date.issued2021-
dc.identifier.citationPhysical Review Letters, 2021, v. 126 n. 12, p. article no. 122301-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/300326-
dc.descriptionHybrid open access-
dc.description.abstractThe first measurement of longitudinal decorrelations of harmonic flow amplitudes v_{n} for n=2-4 in Xe+Xe collisions at sqrt[s_{NN}]=5.44 TeV is obtained using 3 μb^{-1} of data with the ATLAS detector at the LHC. The decorrelation signal for v_{3} and v_{4} is found to be nearly independent of collision centrality and transverse momentum (p_{T}) requirements on final-state particles, but for v_{2} a strong centrality and p_{T} dependence is seen. When compared with the results from Pb+Pb collisions at sqrt[s_{NN}]=5.02 TeV, the longitudinal decorrelation signal in midcentral Xe+Xe collisions is found to be larger for v_{2}, but smaller for v_{3}. Current hydrodynamic models reproduce the ratios of the v_{n} measured in Xe+Xe collisions to those in Pb+Pb collisions but fail to describe the magnitudes and trends of the ratios of longitudinal flow decorrelations between Xe+Xe and Pb+Pb. The results on the system-size dependence provide new insights and an important lever arm to separate effects of the longitudinal structure of the initial state from other early and late time effects in heavy-ion collisions.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prl/-
dc.relation.ispartofPhysical Review Letters-
dc.rightsCopyright [year] by The American Physical Society. This article is available online at [link to article].-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleLongitudinal Flow Decorrelations in Xe + Xe Collisions at √sNN=5.44 TeV with the ATLAS Detector-
dc.typeArticle-
dc.identifier.emailLo, CY: samuel3@hku.hk-
dc.identifier.emailParedes Hernandez, D: dparedes@hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.126.122301-
dc.identifier.pmid33834811-
dc.identifier.scopuseid_2-s2.0-85103516413-
dc.identifier.hkuros322719-
dc.identifier.volume126-
dc.identifier.issue12-
dc.identifier.spagearticle no. 122301-
dc.identifier.epagearticle no. 122301-
dc.identifier.isiWOS:000651646900004-
dc.publisher.placeUnited States-

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