Transverse momentum distributions of deuterons and antideuterons in Au + Au collisions at , 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 is obtained. It is found that the parameters increase and decrease with increase of the average number of particles involved in collisions, which reveals the transverse excitation degree increases with collision centrality.

中文翻译：

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在Au，Au碰撞，62.4和200 GeV观察到的（抗）氘核的产生的研究

Au + Au碰撞中氘核和反氘核的横向动量分布。 在多源热模型的框架内，研究了具有不同中心性的， 62.4和200 GeV。横向动量谱由Tsallis分布一致且大致描述。获得参数（平均横向动量，有效温度和熵指数）对事件中心性的依赖性。研究发现，该参数随碰撞平均粒子数的增加而增加或减少，这表明横向激发度随碰撞中心度的增加而增加。