Proton, deuteron and triton flow measurements in Au plus Au collisions at root √s.sub.NN./sub.=2.4 GeV

0572323 - ÚJF 2024 RIV US eng J - Journal Article
Adamczewski-Musch, J. - Arnold, O. - Behnke, C. - Belounnas, A. - Chlad, Lukáš - Kugler, Andrej - Rodriguez Ramos, Pablo - Sobolev, Yuri, G. - Svoboda, Ondřej - Tlustý, Pavel - Wagner, Vladimír … Total 104 authors
Proton, deuteron and triton flow measurements in Au plus Au collisions at root √s_NN=2.4 GeV.
European Physical Journal A. Roč. 59, č. 4 (2023), č. článku 80. ISSN 1434-6001. E-ISSN 1434-601X
R&D Projects: GA MŠMT LTT17003
Research Infrastructure: FAIR-CZ III - 90260
Institutional support: RVO:61389005
Keywords : FAIR * spectrometer HADES
OECD category: Nuclear physics
Impact factor: 2.6, year: 2022
Method of publishing: Open access
https://doi.org/10.1140/epja/s10050-023-00936-6

High-precision measurements of flow coefficients v(n) (n = 1 - 4) for protons, deuterons and tritons relative to the first-order spectator plane have been performed in Au+Au collisions at root s(NN) = 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 p(t) and rapidity y(cm) 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 v(1), d(v1)/dy'vertical bar y'=0 where y' is the scaled rapidity, and for v(2) at mid-rapidity. Scaling with the number of nucleons is observed for the p(t) dependence of v(2) and v(4) at mid-rapidity, which is indicative for nuclear coalescence as the main process responsible for light nuclei formation. v(2) is found to scale with the initial eccentricity , while v(4) scales with (2) and (.) The multi-differential high-precision data on v(1), v(2), v(3), and v(4) provides important constraints on the equation-of-state of compressed baryonic matter.
Permanent Link: https://hdl.handle.net/11104/0343059