EXO experiment searches for exotic decay

The search for neutrinoless double-beta decay could reveal valuable information about neutrinos. Two years ago researchers began using a tank of liquid xenon installed more than 2000 feet deep in a salt formation in the southeastern corner of New Mexico to study neutrinos. They're looking for clues to one of the biggest puzzles about the tiny particles: What is their mass? Finding the mass of the neutrino can help answer big questions such as how the universe grew into its present form. This tan...