In the first few microseconds after the big bang, the universe was in a state of matter called the quark-gluon plasma (QGP). Research into small collision systems is one of the main pillars of present-day research in high energy nuclear physics, and the discovery of QGP droplet formation in these small systems has fomented major developments in relativistic hydrodynamics. A key element of the exploration of small systems is the RHIC small systems geometry scan, composed of three different systems with three different intrinsic geometries. The PHENIX collaboration found the intrinsic geometry to be manifest in the measured correlations, and published the results in Nature Physics in 2018. A new PHENIX publication, submitted to Phys Rev C, explores these measurements in further detail by exploring longitudinal dynamics and nonflow by means of choosing particle pairs in different kinematic windows. In this talk we discuss these latest results in the context of the geometry engineering program.
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Recording of the talk is available here:
https://bnl.zoomgov.com/rec/share/PRul5APt-iY3OyIZpbzo6AjWYerZ_IJbV2rE9WPLlcFRBPbscYQG83BNFSaGfXJE.Eh1tyNPBsTyBnB0k?startTime=1635865476000
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