欧洲核子研究中心发现新物质形态——夸克胶子等离子体存在的证据

EVIDENCE FOR A NEW STATE OF MATTERQUARK-GLUON PLASMA AT CERN

介绍和评述了欧洲核子研究中心 (CERN)的相对论重离子碰撞的重要实验结果及其物理解释 .碰撞初期形成了高温高密系统 ,能量密度达到了产生夸克胶子等离子体 (QGP)的阈值 .低质量双轻子增长、J/Ψ反常压低和奇异粒子增长等实验现象可以用形成了QGP来解释 .但目前的实验还不足以证明已经产生了QGP .

Important experimental results from CERN heavy ion collisions and their physical interpretation are reviewed.A hot and dense system is formed in the early stages of the collisions,and the energy density reaches the threshold to create quark\|gluon plasma(QGP).The experimental phenomena like low\|mass dilepton enhancement,J/Ψ suppression and strangeness enhancement can be explained through the formation of QGP.However,the current data are still not enough to prove the existence of QGP.