Abstract
We present recent PHENIX results for long-range two-particle correlation functions across a large pseudorapidity(η) gap in high-multiplicity p+Au, d+Au and 3He+Au collisions. Enhanced correlations are observed for particles with small azimuthal separation. Measurements of the second order Fourier coefficients (v2) in p/d/3He+Au collisions, and the third order Fourier coefficient (v3) in 3He+Au collision are performed using the event plane method. Scaling of v2 with the initial eccentricity (ɛ2) is performed in each system to investigate the role of the initial geometry in the development of a final-state anisotropy in the particle emission. The v2 coefficients for identified π±, K± and (anti-)proton are measured as a function of transverse kinetic energy (KET) and their magnitudes are found to scale approximately with the number of constituent quarks in the hadron.
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