在相对论重离子对撞机（RHIC）的最大能量，即质心能量平方根√[s(NN)] = 200 GeV下，金离子与金离子碰撞产生的带电粒子的赝快度分布。
Pseudorapidity distributions of charged particles from Au + Au collisions at the maximum RHIC energy, square root[s(NN)] = 200 GeV.
作者信息
Bearden I G, Beavis D, Besliu C, Blyakhman Y, Budick B, Bøggild H, Chasman C, Christensen C H, Christiansen P, Cibor J, Debbe R, Enger E, Gaardhøje J J, Hagel K, Hansen O, Holm A, Holme A K, Ito H, Jakobsen E, Jipa A, Jørdre J I, Jundt F, Jørgensen C E, Karabowicz R, Keutgen T, Kim E J, Kozik T, Larsen T M, Lee J H, Lee Y K, Løvhøiden G, Majka Z, Makeev A, McBreen B, Mikelsen M, Murray M, Natowitz J, Nielsen B S, Norris J, Olchanski K, Olness J, Ouerdane D, Płaneta R, Rami F, Ristea C, Röhrich D, Samset B H, Sandberg D, Sanders S J, Sheetz R A, Staszel P, Thorsteinsen T F, Tveter T S, Videbaek F, Wada R, Wieloch A, Zgura I S
机构信息
Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
出版信息
Phys Rev Lett. 2002 May 20;88(20):202301. doi: 10.1103/PhysRevLett.88.202301. Epub 2002 May 2.
We present charged-particle multiplicities as a function of pseudorapidity and collision centrality for the 197Au+197Au reaction at square root[s(NN)] = 200 GeV. For the 5% most central events we obtain dN(ch)/deta/(eta = 0) = 625+/-55 and N(ch)/(-4.7< or =eta < or =4.7) = 4630 +/- 370, i.e., 14% and 21% increases, respectively, relative to square root[s(NN)] = 130 GeV collisions. Charged-particle production per pair of participant nucleons is found to increase from peripheral to central collisions around midrapidity. These results constrain current models of particle production at the highest RHIC energy.
我们给出了在(\sqrt{s(NN)} = 200) GeV下(^{197}Au + ^{197}Au)反应中带电粒子多重数作为赝快度和碰撞中心度的函数。对于最中心的5%事件，我们得到(dN(ch)/d\eta/(\eta = 0) = 625 \pm 55)以及(N(ch)/(-4.7 \leq \eta \leq 4.7) = 4630 \pm 370)，即相对于(\sqrt{s(NN)} = 130) GeV碰撞分别增加了14%和21%。发现在快度中点附近，每对参与核子的带电粒子产额从周边碰撞到中心碰撞增加。这些结果限制了当前在最高相对论重离子对撞机（RHIC）能量下的粒子产生模型。
Zotero 插件