标题： 光子干涉测量和相对论重离子碰撞中热区的大小 显示英文标题

标题： Photon interferometry and size of the hot zone in relativistic heavy ion collisions

摘要： 从WA98合作组在SPS能量下观测到的单光子谱的理论分析中获得的参数已被用于评估双光子关联函数。 在考虑了热浴中强子可能的谱变化效应的情况下，也评估了RHIC能量下的单光子谱和双光子关联。 我们发现，SPS的比值为$R_{side}/R_{out} \sim 1$，而RHIC能量的比值为$R_{side}/R_{out} <1$。 显示英文摘要

摘要： The parameters obtained from the theoretical analysis of the single photon spectra observed by the WA98 collaboration at SPS energies have been used to evaluate the two photon correlation functions. The single photon spectra and the two photon correlations at RHIC energies have also been evaluated, taking into account the effects of the possible spectral change of hadrons in a thermal bath. We find that the ratio $R_{side}/R_{out} \sim 1$ for SPS and $R_{side}/R_{out} <1$ for RHIC energy.