Proton, deuteron and triton flow measurements in Au+Au collisions at √sNN=2.4 GeV

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • HADES Collaboration - (Autor:in)
  • Professur für Wasserstoff- und Kernenergietechnik (WKET)
  • GSI Helmholtzzentrum für Schwerionenforschung
  • Excellence Cluster ORIGINS
  • Technische Universität München
  • Johann Wolfgang Goethe-Universität Frankfurt am Main
  • Université Paris-Saclay
  • University of Coimbra
  • Czech Academy of Sciences
  • Polish Academy of Sciences
  • Justus-Liebig-Universität Gießen
  • Helmholtz-Zentrum Dresden-Rossendorf
  • Slovak Academy of Sciences
  • Polytechnic Institute of Coimbra
  • Technische Universität Darmstadt
  • University of Santiago de Compostela
  • Technische Universität Dresden
  • Jagiellonian University in Kraków

Abstract

High-precision measurements of flow coefficients vn (n= 1 - 4) for protons, deuterons and tritons relative to the first-order spectator plane have been performed in Au+Au collisions at sNN=2.4 GeV with the High-Acceptance Di-Electron Spectrometer (HADES) at the SIS18/GSI. Flow coefficients are studied as a function of transverse momentum pt and rapidity ycm over a large region of phase-space and for several classes of collision centrality. A clear mass hierarchy, as expected by relativistic hydrodynamics, is found for the slope of v1, dv1/dy′|y′=0 where y is the scaled rapidity, and for v2 at mid-rapidity. Scaling with the number of nucleons is observed for the pt dependence of v2 and v4 at mid-rapidity, which is indicative for nuclear coalescence as the main process responsible for light nuclei formation. v2 is found to scale with the initial eccentricity ⟨ ϵ2⟩ , while v4 scales with ⟨ϵ2⟩2 and ⟨ ϵ4⟩. The multi-differential high-precision data on v1, v2, v3, and v4 provides important constraints on the equation-of-state of compressed baryonic matter.

Details

OriginalspracheEnglisch
Aufsatznummer80
Seiten (von - bis)1-21
Seitenumfang21
FachzeitschriftEuropean Physical Journal A
Jahrgang59
Ausgabenummer4
PublikationsstatusVeröffentlicht - 18 Apr. 2023
Peer-Review-StatusJa

Schlagworte

ASJC Scopus Sachgebiete