First, second, third and fourth flow harmonics of deuterons and protons in Au+Au reactions at 1.23 A GeV

Understand

We explore the directed, elliptic, triangular and quadrangular flow of deuterons in Au+Au reactions at a beam energy of 1.23 AGeV within the UrQMD approach.

• These investigations are of direct relevance for the HADES experiment at GSI that has recently presented first data on the flow of light clusters in Au+Au collisions at 1.23 AGeV.
• To address the deuteron flow, UrQMD has been extended to include deuteron formation by coalescence.
• We find that this ansatz provides a very good description of the measured deuteron flow data, if a hard equation of state is used for the simulation.