标题： RHIC上的PHOBOS实验的初步结果 显示英文标题

标题： First Results from the PHOBOS Experiment at RHIC

摘要： PHOBOS 是在RHIC研究Au-Au碰撞的四个实验之一。 在第一次运行期间，RHIC提供了Au+Au碰撞，能量分别为$\sqrt{s_{_{NN}}}$ = 56 GeV和130 GeV。 在此期间收集的数据使我们能够研究粒子产生随能量和碰撞中心度的依赖性，最终状态方位角分布的各向异性以及中间快度的粒子比值。 显示英文摘要

摘要： PHOBOS is one of four experiments studying Au-Au collisions at RHIC. During the first running period RHIC provided Au+Au collisions at $\sqrt{s_{_{NN}}}$ = 56 GeV and 130 GeV. The data collected during this period allowed us to study the energy and centrality dependence of particle production, the anisotropy of the final state azimuthal distribution and particle ratios at mid-rapidity.