The enhancement of v4 in nuclear collisions at the highest densities signals a first-order phase transition

The beam energy dependence of   v4  (the quadrupole moment of the transverse radial flow) is sensitive to the nuclear equation of state (EoS) in mid-central Au + Au collisions at the energy range of   3<sNN−−−−√<30  GeV,
The beam energy dependence of   v4  (the quadrupole moment of the transverse radial flow) is sensitive to the nuclear equation of state (EoS) in mid-central Au + Au collisions at the energy range of   3<sNN−−−−√<30  GeV, which is investigated within the hadronic transport model JAM. Different equations of state, namely, a free hadron gas, a first-order phase transition and a crossover are compared. An enhancement of   v4  at   sNN−−−−√≈6  GeV is predicted for an EoS with a first-order phase transition. This enhanced   v4  flow is driven by both the enhancement of   v2  as well as the positive contribution to   v4  from the squeeze-out of spectator particles which turn into participants due to the admixture of the strong collective flow in the shocked, compressed nuclear matter.
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Metadaten
Author:Yasushi Nara, Jan Steinheimer-Froschauer, Horst Stöcker
URN:urn:nbn:de:hebis:30:3-499581
DOI:http://dx.doi.org/10.1140/epja/i2018-12626-y
Parent Title (English):The European physical journal / A / Hadrons and nuclei
Document Type:Article
Language:English
Year of Completion:2018
Date of first Publication:2018/11/06
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2019/04/09
Volume:54
Issue:188
Pagenumber:5
Note:
This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
HeBIS PPN:451035585
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 4.0

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