论文标题
在$ \ sqrt {s_ {nn}} $ = 14.5、62.4和200 GEV中观察到的（反）Deuteron的生产研究
Study of production of (anti)deuteron observed in Au+Au collisions at $\sqrt{S_{NN}}$=14.5, 62.4 and 200 GeV
论文作者
论文摘要
在$ \ sqrt {s_ {nn}} $ = 14.5、62.4和200 GEV的Au+Au碰撞中，Deuterons和Anti-Deuterons的横向动量分布在多库热模型的框架中研究了具有不同中心性的14.5、62.4和200 GEV。横向动量光谱是一致的，并通过Tsallis分布进行了近似描述。获得了参数（平均横向动量，有效温度和熵指数）对事件中心性的依赖性。发现参数随涉及碰撞的平均颗粒数量的增加而增加，这表明核停止程度随碰撞中心性的增加而增加。
Transverse momentum distributions of deuterons and anti-deuterons in Au+Au collisions at $\sqrt{S_{NN}}$=14.5, 62.4 and 200 GeV with different centrality are studied in the framework of the multisource thermal model. Transverse momentum spectra are conformably and approximately described by the Tsallis distribution. The dependence of parameters (average transverse momenta, effective temperature and entropy index) on event centrality are obtained. It is found that the parameters increase with increase of the average number of particles involved in collisions, which reveals the nuclear stopping degree increases with collision centrality.
