论文标题
轻核（$ d $，$ t $）在au + au碰撞中的生产$ \ sqrt {s_ {nn}} $ = 7.7-200 GEV
Light Nuclei ($d$, $t$) Production in Au + Au Collisions at $\sqrt{s_{NN}}$ = 7.7 - 200 GeV
论文作者
论文摘要
在高能核碰撞中，光核可以视为重子簇，它们的产量对重子密度波动敏感。因此，光核的产生可用于研究QCD相变，在该转变中将增强重子密度的波动。预测，在重型离子碰撞中，可观察到的光核的产量比，定义为$ n（t）$$ \ times $$ n（p）$/$ n^2（d）$。在本文中，我们介绍了$ \ sqrt {s _ {s _ {\ mathrm {nn}} $ = 7.7、11.5、11.5、14.5、19.6、27、27、27、39、39、54.4、62.4、62.4、62.4、200 g eft ph rh的能量和特里顿产量的能量和集中度依赖性。我们显示了合并参数的光束能量依赖性，$ b_2（d）$和$ b_3（t）$，粒子比，$ d/p $，$ t/p $和$ t/d $，以及$ n（t）$ n（t）$ n（t）$ n（t）$ n（t）$ n（t）$ n（p）$ n（p）$ n（p）$ n^2（d）$。更重要的是，在收益率的比率上观察到非单调能量依赖性，$ n（t）$ \ times $$ n（p）$/$ n^2（d）$，在0-10 \％中央au+au+au collisisions collisision collisision collisions the 20-30 GEV左右。将讨论他们对QCD关键点搜索和状态方程的变化的物理含义。
In high-energy nuclear collisions, light nuclei can be regarded as a cluster of baryons and their yields are sensitive to the baryon density fluctuations. Thus, the production of light nuclei can be used to study the QCD phase transition, at which the baryon density fluctuation will be enhanced. The yield ratio of light nuclei, defined as $N(t)$$\times$$N(p)$/$N^2(d)$, is predicted to be sensitive observable to search for the 1st-order phase transition and/or QCD critical point in heavy-ion collisions. In this paper, we present the energy and centrality dependence of (anti)deuteron and triton production in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 7.7, 11.5, 14.5, 19.6, 27, 39, 54.4, 62.4, and 200 GeV measured by the STAR experiment at RHIC. We show beam-energy dependence for the coalescence parameter, $B_2(d)$ and $B_3(t)$, particle ratios, $d/p$, $t/p$, and $t/d$, and the yield ratio of $N(t)$$\times$$N(p)$/$N^2(d)$. More importantly, non-monotonic energy dependence is observed for the yield ratio, $N(t)$$\times$$N(p)$/$N^2(d)$, in 0-10\% central Au+Au collisions with a peak around 20-30 GeV. Their physics implications on QCD critical point search and change of the equation of state will be discussed.
