How much does a neutrino weigh ? - Measuring the smallest mass in the Universe
Prof. Giorgio Gratta (Stanford University, U.S.A.)

With the definite evidence for neutrino oscillations collected in the last few years we now believe that neutrino masses are non-zero. Oscillation measurements, however, only measure mass differences and give us little information about the absolute values of neutrino masses.

The rare phenomenon of neutrinoless double-beta decay represents our best option to attempt measuring very small neutrino masses. I will describe a new type of double-beta decay experiment that, through the exploitation of nuclear and particle detector techniques, as well as atomic physics tools, will offer the possibility of very large, background free experiments.