https://doi.org/10.1051/epjconf/202429605014
Light- and hyper-nuclei collectivity in Au+Au collisions at RHIC-STAR
1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2 School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
* e-mail: chdhan@impcas.ac.cn
Published online: 26 June 2024
We report the first results on collision energy and particle mass dependence of directed flow v1 of light- and hyper-nuclei in mid-central Au+Au collisions at center of mass energies per nucleon pair of 3.0, 3.2, 3.5, and 3.9 GeV. All data have been collected by the STAR experiment in the fixed-target mode during the second phase of the RHIC beam energy scan. The mid-rapidity v1 slope, dv1/dy|y=0, of hyper-nuclei shows a similar energy and particle mass dependence to that of light-nuclei. The results suggest that the coalescence mechanism plays a dominant role in the formation of light- and hyper-nuclei.
© The Authors, published by EDP Sciences, 2024
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