| Autor: |
Bearden IG; Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark., Beavis D, Besliu C, Budick B, Bøggild H, Chasman C, Christensen CH, Christiansen P, Cibor J, Debbe R, Enger E, Gaardhøje JJ, Germinario M, Hagel K, Hansen O, Holm A, Holme AK, Ito H, Jipa A, Jundt F, Jørdre JI, Jørgensen CE, Karabowicz R, Kim EJ, Kozik T, Larsen TM, Lee JH, Lee YK, Løvhøiden G, Majka Z, Makeev A, Mikelsen M, Murray M, Natowitz J, Nielsen BS, Norris J, Olchanski K, Ouerdane D, Płaneta R, Rami F, Ristea C, Röhrich D, Samset BH, Sandberg D, Sanders SJ, Sheetz RA, Staszel P, Tveter TS, Videaek F, Wada R, Yin Z, Zgura IS |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2005 Apr 29; Vol. 94 (16), pp. 162301. Date of Electronic Publication: 2005 Apr 28. |
| DOI: |
10.1103/PhysRevLett.94.162301 |
| Abstrakt: |
We have measured rapidity densities dN/dy of pi+/- and K+/- over a broad rapidity range (-0.1 < y < 3.5) for central Au + Au collisions at square root(sNN) = 200 GeV. These data have significant implications for the chemistry and dynamics of the dense system that is initially created in the collisions. The full phase-space yields are 1660 +/- 15 +/- 133 (pi+), 1683 +/- 16 +/- 135 (pi-), 286 +/- 5 +/- 23 (K+), and 242 +/- 4 +/- 19 (K-). The systematics of the strange to nonstrange meson ratios are found to track the variation of the baryochemical potential with rapidity and energy. Landau-Carruthers hydrodynamics is found to describe the bulk transport of the pions in the longitudinal direction. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
