Electron's Perfect Roundness Excludes Possibility of New Particles

Physicists have been searching for asymmetry in the shape of the electron for decades, hoping to find signs of new physics. The latest experiments show that the electron is rounder than previously thought, disappointing those hoping for new discoveries. However, the results still help to constrain models for unknown particles and forces that may be missing from the current understanding of physics. The search for the electric dipole moment (EDM) of the electron continues, with two competing teams using different approaches to increase sensitivity and measurement time. The dream is that these experiments will be the first to detect signs of new physics, prompting further investigations.