Observation of Universal Expansion Anisotropy from Cold Atoms to Hot Quark-Gluon Plasma

Ke Li, Hong-Fang Song, Hao-Jie Xu +2

Azimuthal anisotropy has been ubiquitously observed in high-energy proton-proton, proton-nucleus, and nucleus-nucleus (heavy-ion) collisions, shaking the early belief that those an…