Third Harmonic Flow of Charged Particles in Au Plus Au Collisions at Root s(NN)=200 GeV
We report measurements of the third harmonic coefficient of the azimuthal anisotropy, upsilon(3), known as triangular flow. The analysis is for charged particles in Au + Au collisions at root s(NN) = 200 GeV, based on data from the STAR experiment at the BNL Relativistic Heavy Ion Collider. Two-particle correlations as a function of their pseudorapidity separation are fit with narrow and wide Gaussians. Measurements of triangular flow are extracted from the wide Gaussian, from two-particle cumulants with a pseudorapidity gap, and also from event plane analysis methods with a large pseudorapidity gap between the particles and the event plane. These results are reported as a function of transverse momentum and centrality. A large dependence on the pseudorapidity gap is found. Results are compared with other experiments and model calculations.
Drachenberg, James L.; Gibson, Adam; Grosnick, David; Koetke, Donald D.; Stanislaus, Shirvel; and STAR Collaboration, "Third Harmonic Flow of Charged Particles in Au Plus Au Collisions at Root s(NN)=200 GeV" (2013). Physics and Astronomy Faculty Publications. 51.