My work focuses on the lightest known matter particles, the neutrino. Their number far exceeds the atoms in the universe. Yet we know surprisingly little about these particles. It is only recently, for example, that we came to realize these particles have mass, albeit very tiny. This became clear when neutrinos were shown to live a double life, transforming from one type into another through the quantum mechanical effect of neutrino oscillations. This effect requires neutrino mass.
