重离子碰撞中的量子饱和机制

Quantum Saturation in Heavy-ion Collisions

分别利用胶子半经典饱和与量子饱和机制,研究了相对论重离子碰撞中净余质子产生截面的大横动量现象。通过贝塞尔函数多项式近似与辛普森求积法的结合应用,解决了对贝塞尔函数的二重高振荡积分问题。计算发现:量子饱和机制的计算结果能很好地解释布鲁克海文国家实验室的最新实验现象,从而证实了高能重离子碰撞中胶子量子饱和机制的存在。

Using the classical and quantum saturation,the net-proton transverse momentum spectra in relativistic heavy-ion collisions is studied.By means of the combination of multinomial fitting and Simpson numerical integration,it is found that the theoretical results with the quantum saturation are in good agreement with the late experimental data.Thus,the gluon quantum saturation phenomena are really existence in high energy heavy-ion collisions.