Physicists Get First Look at the 'Zeptoverse' Through Rare Matter Decay

An exceptionally rare decay event involving matter has given particle physicists a first glimpse into the so-called zeptoverse. The phenomenon opens new avenues for studying the physical world at scales roughly 100 billion times smaller than an atom. Researchers view the discovery as a potential gateway to investigating phenomena that have been difficult to access with existing methods. The finding expands the range of questions physicists can pursue at extremely tiny dimensions.