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Vanderbilt University, Nashville, Tennessee 37235, USA.
Phys Rev Lett. 2001 Apr 16;86(16):3500-5. doi: 10.1103/PhysRevLett.86.3500.
We present results for the charged-particle multiplicity distribution at midrapidity in Au-Au collisions at square root of [s(NN)] = 130 GeV measured with the PHENIX detector at RHIC. For the 5% most central collisions we find dN(ch)/d eta(vertical line eta = 0) = 622+/-1(stat)+/-41(syst). The results, analyzed as a function of centrality, show a steady rise of the particle density per participating nucleon with centrality.
我们展示了用相对论重离子对撞机（RHIC）上的PHENIX探测器测量的、在质心能量平方根[s(NN)] = 130 GeV的金金碰撞中，中快度处带电粒子多重数分布的结果。对于5%最中心的碰撞，我们发现dN(ch)/d eta(vertical line eta = 0) = 622+/-1(统计)+/-41(系统)。作为中心度函数进行分析的结果表明，每个参与核子的粒子密度随中心度稳定上升。
