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Global Lambda-hyperon polarization in Au plus Au collisions at root S-NN=3 GeV

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dc.contributor.authorAbdallah, M. S.
dc.contributor.authorAboona, B. E.
dc.contributor.authorAdam, J.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAlekseev, I.
dc.contributor.authorBrandin, A. V.
dc.contributor.authorKhyzhniak, Y. V.
dc.contributor.authorKochenda, L.
dc.contributor.authorKravtsov, P.
dc.contributor.authorNigmatkulov, G.
dc.contributor.authorOkorokov, V. A.
dc.contributor.authorParfenov, P.
dc.contributor.authorStrikhanov, M.
dc.contributor.authorTaranenko, A.
dc.contributor.authorАлексеев, Игорь Геннадьевич
dc.contributor.authorБрандин, Андрей Владимирович
dc.contributor.authorНигматкулов, Григорий Александрович
dc.contributor.authorОкороков, Виталий Алексеевич
dc.contributor.authorПарфенов, Петр Евгеньевич
dc.contributor.authorСтриханов, Михаил Николаевич
dc.contributor.authorТараненко, Аркадий Владимирович
dc.date.accessioned2024-11-30T01:46:28Z
dc.date.available2024-11-30T01:46:28Z
dc.date.issued2021
dc.description.abstractGlobal hyperon polarization, (P) over barH, in Au + Au collisions over a large range of collision energy, root S-NN, was recently measured and successfully reproduced by hydrodynamic and transport models with intense fluid vorticity of the quark-gluon plasma. While naive extrapolation of data trends suggests a large (P) over barH as the collision energy is reduced, the behavior of (P) over barH at small root S-NN < 7.7 GeV is unknown. Operating the STAR experiment in fixed-target mode, we measured the polarization of Lambda hyperons along the direction of global angular momentum in Au + Au collisions at root S-NN = 3 GeV. The observation of substantial polarization of 4.91 +/- 0.81(stat.) +/- 0.15(syst.)% in these collisions may require a reexamination of the viscosity of any fluid created in the collision, of the thermalization timescale of rotational modes, and of hadronic mechanisms to produce global polarization.
dc.identifier.citationGlobal Lambda-hyperon polarization in Au plus Au collisions at root S-NN=3 GeV / Abdallah, MS [et al.] // Physical Review C. - 2021. - 104. - № 6. - 10.1103/PhysRevC.104.L061901
dc.identifier.doi10.1103/PhysRevC.104.L061901
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevC.104.L061901
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85122576172&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000740280100002
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/25211
dc.relation.ispartofPhysical Review C
dc.titleGlobal Lambda-hyperon polarization in Au plus Au collisions at root S-NN=3 GeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue6
oaire.citation.volume104
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