Beam energy dependence of rapidity-even dipolar flow in Au+Au collisions

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dc.citation.firstpage26en_US
dc.citation.journalTitlePhysics Letters Ben_US
dc.citation.lastpage32en_US
dc.citation.volumeNumber784en_US
dc.contributor.authorSTAR Collaborationen_US
dc.date.accessioned2018-12-03T17:11:54Zen_US
dc.date.available2018-12-03T17:11:54Zen_US
dc.date.issued2018en_US
dc.description.abstractNew measurements of directed flow for charged hadrons, characterized by the Fourier coefficient v1, are presented for transverse momenta pT, and centrality intervals in Au+Au collisions recorded by the STAR experiment for the center-of-mass energy range sNN=7.7–200 GeV. The measurements underscore the importance of momentum conservation, and the characteristic dependencies on sNN, centrality and pT are consistent with the expectations of geometric fluctuations generated in the initial stages of the collision, acting in concert with a hydrodynamic-like expansion. The centrality and pT dependencies of v1even, as well as an observed similarity between its excitation function and that for v3, could serve as constraints for initial-state models. The v1even excitation function could also provide an important supplement to the flow measurements employed for precision extraction of the temperature dependence of the specific shear viscosity.en_US
dc.identifier.citationSTAR Collaboration. "Beam energy dependence of rapidity-even dipolar flow in Au+Au collisions." <i>Physics Letters B,</i> 784, (2018) Elsevier: 26-32. https://doi.org/10.1016/j.physletb.2018.07.013.en_US
dc.identifier.doihttps://doi.org/10.1016/j.physletb.2018.07.013en_US
dc.identifier.urihttps://hdl.handle.net/1911/103513en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsThis is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleBeam energy dependence of rapidity-even dipolar flow in Au+Au collisionsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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