报告题目：Observation of collectivity in p+Au, d+Au and 3He+Au collisions with PHENIX
报 告 人：徐峤（博士后 Vanderbilt University）
邀 请 人：陈震宇
报告时间：11月22日(周五)，14:00
报告地点：青岛校区第周苑E -122
报告摘要：
In order to investigate the origin of collectivity in small systems, the PHENIX experiment has collected data of p+Au, d+Au and 3He+Au collisions at 200 GeV, giving a unique set of initial geometries. In this talk we present a complete set of elliptic and triangular flow measurements, which taken together provide unprecedented model discrimination between initial-state momentum correlation effects and final-state effects. We have also measured 4-particle cumulants in p+Au and d+Au at 200 GeV with two subevents which kinematically suppress non-flow via removal of short-range correlations to gauge the non-flow effect and probe the fluctuation nature of flow. This talk also covers the elliptic anisotropies measured in the d+Au beam energy scan, with collision energies ranging from 200 GeV to 19.6 GeV. The d+Au beam energy scan data leaves the intrinsic geometry unchanged but varies the system lifetime and the duration of the possible QGP phase. Measurements of v2(PT) and v2(η) at different energies provide important insights about the system dynamics and allow further input for model comparison.
报告人简介：
徐峤：
Postdoc, Vanderbilt University 2018-now
Ph.D., Vanderbilt University 2012-2018
B.S., University of Science and Technology of China, 2008-2012
