夸克胶子等离子体的2π干涉学检测

Test of quark-gluon plasma by two-pion interferometry

在2π干涉学中,对不同的π源,2π关联函数可以是不同的.如果在超相对论重离子碰撞中出现夸克胶子等离子体,π介子将从夸克胶子等离子体表面发射,此时2π关联函数将出现一种特殊的振荡行为.这种振荡行为可以用来探明夸克胶子等离子体的存在性,同时也是超相对论重离子碰撞中出现夸克胶子等离子体的一个信号.

The two-pion correlation functions are different for different distribution probabilities of pion sources in two-pion interferometry. If quark-gluon plasma is produced in ultrarelativistic heavy ion collisions, the pion mesons will emit from the surface of quark-gluon plasma and the corresponding two-pion correlation function will have a special oscillation behavior, which can be used to verify the existence of quark-gluon plasma and can also be a signature of the appearance of quark-gluon plasma.