Abstract
The PHOBOS experiment has measured the charged particle multiplicity at midrapidity in collisions at as a function of the collision centrality. Results on divided by the number of participating nucleon pairs are presented as a function of As was found from similar data at the data can be equally well described by parton saturation models and two-component fits, which include contributions that scale as and the number of binary collisions We compare the data at the two energies by means of the ratio of the charged particle multiplicity for the two different energies as a function of For events with we find that this ratio is consistent with a constant value of
- Received 10 January 2002
DOI:https://doi.org/10.1103/PhysRevC.65.061901
©2002 American Physical Society