用基于非广延热力学Tsallis统计的爆炸波(Tsallis blast‐wave ,TBW)模型研究了RHIC能区200 GeV质心能量氘核‐金核(d+Au)碰撞系统中心快度区和前(后)向快度区轻强子和J/Ψ的横动量谱.在全动量区间,TBW模型可以很好地描述粒子谱.分析结果表明,200 GeV d+Au中心碰撞中平均径向流不为零,其大小介于同能量的质子‐质子(p+p)与金核‐金核(Au+Au)碰撞系统之间,d+Au碰撞中存在显著的冷核物质(cold nuclear matter ,CNM )效应.J/Ψ在中心快度区径向流为零,而在后向快度区具有非零的径向流,可能预示在d+ Au碰撞系统中已探测到色玻璃凝聚(color glass condensate ,CGC)效应.%The blast‐wave model based on the Tsallis statistics (TBW model) was used to study the particle production in 200 GeV d+Au collisions at RHIC .Light hadrons and J/Ψ transverse‐momentum spectra at both mid‐rapidity and forward/backward rapidity were analyzed .It was found that a non‐zero radial flow for light hadrons ,indicating a strong cold nuclear matter (CNM) effect in d+Au collisions .J/Ψ shows a finite radial flow at the backward rapidity .This result may imply the onset of initial state color glass condensate (CGC) in the d+Au collision system .
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