Collective flow and correlations measurements with HADES in Au+Au collisions at 1.23 AGeV

TL;DR

This paper reports precise measurements of collective flow and particle correlations in gold-gold collisions at 1.23 AGeV using the HADES detector, including the first measurement of triangular flow.

Contribution

It provides high-precision, multi-differential data on flow coefficients and correlations, including the first measurement of triangular flow at this energy.

Findings

Measurement of directed ($v_1$) and elliptic ($v_2$) flow.

First measurement of triangular flow ($v_3$).

High-statistics data enabling detailed analysis of collective effects.

Abstract

The HADES experiment provides a large acceptance combined with a high mass resolution and therefore makes it possible to study dielectron and hadron production in heavy-ion collisions with unprecedented precision. With the high statistics of seven billion Au+Au collisions at 1.23 AGeV recorded in 2012 the investigation of collective effects and particle correlations is possible with unprecedented accuracy. We present multi-differential data on directed ($v_1$) and elliptic ($v_2$) flow, and the first measurement of triangular flow ($v_3$), of protons and deuterons.