In the original formulation of the Standard Model, neutrinos were massless, came in three distinct types or flavours (electron, muon and tau), and were clearly distinct from their antiparticles. Now ...

Neutrinos come in three flavour states (electron, muon and tau), and since the 1990s we have known that a neutrino can change flavour as it travels. This astonishing phenomenon is due to quantum ...

When three different neutrinos (each with a different mass) are traveling through space with waves of different frequencies, they are thought to each be a different type of neutrino, and are thus each ...