AI 中文总结
研究通过动力学理论弛豫时间近似，在手征SU(3)强子模型中计算D介子在致密核介质中的空间扩散和动量传输系数，用不同近似估算弛豫时间，其结果对评估未来重离子碰撞实验中的压缩重子物质密度有重要意义。
AI 中文摘要
我们通过动力学理论的弛豫时间近似，研究了D介子在致密核介质中的空间扩散系数和动量传输系数。在手征SU(3)强子模型中计算了D介子输运性质的介质修正。分别用低密度稀释气体近似和高密度简并气体近似估算弛豫时间。我们注意到，D介子的弛豫时间和空间扩散在低密度稀释气体区域迅速减小，在高密度简并气体区域缓慢减小。本工作关于D介子扩散的详细结果对于未来重离子碰撞实验中可评估的压缩重子物质密度具有重要意义。
英文摘要
We study the spatial diffusion coefficient and the momentum transport coefficients of D mesons through a dense nuclear medium in the relaxation time approximation of the kinetic theory. The in medium modifications of the D meson transport properties are computed in the chiral SU(3) hadronic model. Relaxation time is estimated using dilute and degenerate gas approximations for low and high baryonic densities, respectively. We have noticed that relaxation time and spatial diffusion of D meson decrease rapidly in the low density dilute gas domain and mildly in the high density degenerate gas domain. The detailed result of the present work on D meson diffusion is quite contemporary and important towards the compressed baryonic matter densities which can be assessed in future heavy ion collision experiments.
