The first rapidity density distributions from relativistic collisions between truly heavy nuclei are presented. The distributions are compared with expectations from a linear extrapolation of results obtained from collisions with lighter nuclei. Fluctuations are essentially described by a simple scenario with stochastic emission.
Bibliographical noteFunding Information:
The authorsw ish to expressth eirg ratitudeto the AGS staff at BNL. The financial supportf rom the SwedishN aturalS cienceR esearchC ouncil,the German FederalM inisterof Researcha nd Technology, the UniversityG rantsC ommissionG, overnmenotf India, the NationalS cienceF oundationo f China, the DistinguisheTde acherF oundationo f the StateE du-cationC ommissiono f China, the Fok Ying Tung Ed- ucationF oundationa nd the US Departmenotf Energy and NationalS cienceF oundationa regratefully acknowledged.