Abstract
We present inclusive charged hadron elliptic flow () measured over the pseudorapidity range in collisions at GeV. Results for are presented over a broad range of transverse momentum GeV/) and centrality (0–60%). To study nonflow effects that are correlations other than collective flow, as well as the fluctuations of , we compare two different analysis methods: (1) the event-plane method from two independent subdetectors at forward () and beam () pseudorapidities and (2) the two-particle cumulant method extracted using correlations between particles detected at midrapidity. The two event-plane results are consistent within systematic uncertainties over the measured and in centrality 0–40%. There is at most a 20% difference in the between the two event-plane methods in peripheral (40–60%) collisions. The comparisons between the two-particle cumulant results and the standard event-plane measurements are discussed.
17 More- Received 9 May 2009
DOI:https://doi.org/10.1103/PhysRevC.80.024909
©2009 American Physical Society