PHENIX results on collectivity in high-multiplicity p + Au, d + Au and 3He + Au collisions

32nd Winter Workshop on Nuclear Dynamics

Xu, Qiao^1

Physics and Astronomy Department, Vanderbilt University, United States^1

关键词: Azimuthal separation;    Fourier coefficients;    High multiplicity;    Initial eccentricity;    Measurements of;    Particle emissions;    Pseudorapidities;    Two particle correlation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/736/1/012014/pdf
DOI  :  10.1088/1742-6596/736/1/012014

来源: IOP

【 摘 要 】

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 and3He+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) in3He+Au collision are performed using the event plane method. Scaling of v2with the initial eccentricity (2) 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 v2coefficients 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.