학술논문
Charged particle densities from Au+Au collisions at sNN=130 GeV
Document Type
Article
Author
Bearden, I.G; Beavis, D; Besliu, C; Blyakhman, Y; Brzychczyk, J; Budick, B; Bøggild, H; Chasman, C; Christensen, C.H; Christiansen, P; Cibor, J; Debbe, R; Gaardhøje, J.J; Grotowski, K; Hagel, K; Hansen, O; Holm, A; Holme, A.K; Ito, H; Jakobsen, E; Jipa, A; Jørdre, J.I; Jundt, F; Jørgensen, C.E; Keutgen, T; Kim, E.J; Kozik, T; Larsen, T.M; Lee, J.H; Lee, Y.K; Løvhøiden, G; Majka, Z; Makeev, A; McBreen, E; Murray, M; Natowitz, J; Nielsen, B.S; Olchanski, K; Olness, J; Ouerdane, D; Płaneta, R; Rami, F; Röhrich, D; Samset, B.H; Sanders, S.J; Sheetz, R.A; Sosin, Z; Staszel, P; Thorsteinsen, T.F; Tveter, T.S; Videbæk, F; Wada, R; Wieloch, A; Zgura, I.S
Source
Physics Letters B; December 2001, Vol. 523 Issue: 3-4 p227-233, 7p
Subject
Language
ISSN
03702693
Abstract
We present charged particle densities as a function of pseudorapidity and collision centrality for the 197Au+197Au reaction at sNN=130 GeV. An integral charged particle multiplicity of 3860±300 is found for the 5% most central events within the pseudorapidity range −4.7⩽η⩽4.7. At mid-rapidity an enhancement in the particle yields per participant nucleon pair is observed for central events. Near to the beam rapidity, a scaling of the particle yields consistent with the “limiting fragmentation” picture is observed. Our results are compared to other recent experimental and theoretical discussions of charged particle densities in ultra-relativistic heavy-ion collisions.