Proton, deuteron and triton flow measurements in Au+Au collisions at $\sqrt{s_{NN}} = 2.4$ GeV
Creators: name: HADES Collaboration
name: Adamczewski-Musch, J.
name: Arnold, O.
name: Behnke, C.
name: Belounnas, A.
name: Berger-Chen, J. C.
name: Blanco, A.
name: Blume, C.
name: Böhmer, M.
name: Bordalo, P.
name: Chlad, L.
name: Ciepal, I.
name: Deveaux, C.
name: Dreyer, J.
name: Epple, E.
name: Fabbietti, L.
name: Filip, P.
name: Fonte, P.
name: Franco, C.
name: Friese, J.
name: Fröhlich, I.
name: Galatyuk, T.
name: Garzón, J. A.
name: Gernhäuser, R.
name: Greifenhagen, R.
name: Gumberidze, M.
name: Harabasz, S.
name: Heinz, T.
name: Hennino, T.
name: Hlavac, S.
name: Höhne, C.
name: Holzmann, R.
name: Kämpfer, B.
name: Kardan, B.
name: Koenig, I.
name: Koenig, W.
name: Kohls, M.
name: Kolb, B. W.
name: Korcyl, G.
name: Kornakov, G.
name: Kornas, F.
name: Kotte, R.
name: Kugler, A.
name: Kunz, T.
name: Lalik, R.
name: Lapidus, K.
name: Lopes, L.
name: Lorenz, M.
name: Mahmoud, T.
name: Maier, L.
name: Malige, A.
name: Mangiarotti, A.
name: Markert, J.
name: Matulewicz, T.
name: Maurus, S.
name: Metag, V.
name: Michel, J.
name: Mihaylov, D. M.
name: Müntz, C.
name: Münzer, R.
name: Naumann, L.
name: Nowakowski, K.
name: Parpottas, Y.
name: Pechenov, V.
name: Pechenova, O.
name: Piasecki, K.
name: Pietraszko, J.
name: Przygoda, W.
name: Pysz, K.
name: Ramos, S.
name: Ramstein, B.
name: Rathod, N.
name: Rodriguez-Ramos, P.
name: Rosier, P.
name: Rost, A.
name: Rustamov, A.
name: Salabura, P.
name: Scheib, T.
name: Schuldes, H.
name: Schwab, E.
name: Scozzi, F.
name: Seck, F.
name: Sellheim, P.
name: Selyuzhenkov, I.
name: Siebenson, J.
name: Silva, L.
name: Singh, U.
name: Smyrski, J.
name: Sobolev, Yu. G.
name: Spataro, S.
name: Spies, S.
name: Ströbele, H.
name: Stroth, J.
name: Sturm, C.
name: Svoboda, O.
name: Szala, M.
name: Tlusty, P.
name: Traxler, M.
name: Tsertos, H.
name: Wagner, V.
name: Wendisch, C.
name: Wiebusch, M. G.
name: Wirth, J.
name: Wójcik, D.
name: Zumbruch, P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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 $\sqrt{s_{NN}} = 2.4$ 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 is found for the slope of $v_{1}$, $d v_{1}/d y^{\prime}|_{y^{\prime} = 0}$ where $y^{\prime}$ 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 $\langle ε_{2} \rangle$, while $v_{4}$ scales with $\langle ε_{2} \rangle^{2}$ and $\langle ε_{4} \rangle$. 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.
description: 21 pages, 18 figures, 4 tables; Figs. 11 updated; The manuscript has associated data in the HEPData repository: https://doi.org/10.17182/hepdata.152804