RHIC能区π介子HBT半径对方位角的依赖关系

Azimuthally dependence of pions HBT radii at RHIC energy

利用RQMD模型分析RHIC能区Au+Au非对心碰撞中π介子HBT半径随粒子方位角的变化关系.结果表明,HBT半径Ro,Rs和Ros呈现出明显的二阶三角函数变化趋势.通过发射函数直接计算关联半径的方法分析了HBT半径随方位角变化的原因.

Using RQMD model,this paper analyzes the azimuthally dependence of HBT radii in non-central Au＋Au collision at RHIC energy.The results show that HBT radii Ro,Rs and Rosclearly present the second order trigonometric function trend.And also analyzes the reasons of oscillation of HBT radii with azimuthally angle by directly calculating from emission function.