Abstract
Azimuthal anisotropy () and two-particle angular correlations of high charged hadrons have been measured in collisions at for transverse momenta up to , where hard processes are expected to contribute significantly. The two-particle angular correlations exhibit elliptic flow and a structure suggestive of fragmentation of high partons. The monotonic rise of for is consistent with collective hydrodynamical flow calculations. At , a saturation of is observed which persists up to .
- Received 10 June 2002
DOI:https://doi.org/10.1103/PhysRevLett.90.032301
©2003 American Physical Society