May 13 – 19, 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

Collision Energy and Centrality Dependence of Light Nuclei (Triton) Production at RHIC with the STAR Experiment

May 15, 2018, 5:00 PM
2h 40m
First floor and third floor (Palazzo del Casinò)

First floor and third floor

Palazzo del Casinò

Poster Thermodynamics and hadron chemistry Poster Session


Mr Dingwei Zhang (Central China Normal University)


In high-energy nuclear collisions, light nuclei provide a unique tool to explore the QCD phase structure. The production of light nuclei is sensitive to the temperature and phase-space density of the system at freeze-out. In addition, phase transition will lead to large baryon density fluctuations, which will be reflected in the light nuclei production. For example, the ratio of proton ($N(p)$) and triton ($N(t)$) to deuteron ($N(d)$) yields, which is defined as $N(t)\cdot$N(p)/$N^{2}(d)$ , may be used as a sensitive observable to search for the QCD critical point [1].

In this poster, we will report the first results of the collision energy and centrality dependence of triton production in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 7.7, 11.5, 14.5, 19.6, 27, 39, 62.4 and 200 GeV, measured by the STAR experiment at RHIC. We will present the beam energy dependence of the coalescence parameter $B_3(t)$, directed flow ($v_1$) of light nuclei (d, t, ${}^3$He), and the yield ratio $N(t)\cdot$N(p)/$N^2(d)$. We will also show the energy dependence. Their physics implications will be discussed.

[1] K.J. Sun, L.W. Chen, C.M. Ko and Z.B. Xu, Phys. Lett. B 774, 103 (2017), arXiv:1702.07620.

Content type Experiment
Centralised submission by Collaboration Presenter name already specified
Collaboration STAR

Primary author

Zhenyu Ye (University of Illinois at Chicago)

Presentation materials