Observation of the Antimatter Hypernucleus ({}_{\bar{{\boldsymbol{\Lambda }}}}{}^{{\bf{4}}}\bar{{\bf{H}}}) in High-Energy Nuclear Collisions
The observation of the antimatter hypernucleus ({}_{\bar{\Lambda }}{}^{4}\bar{{\rm{H}}}) in high-energy nuclear collisions, providing insights into the asymmetry between matter and antimatter in the early universe.